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Test your understanding of this English lesson

Test your understanding of the English lesson by answering these questions. You will get the answers and your score at the end of the quiz.
What word can you use to make a deduction where you are almost sure?

Which sentence is a deduction that shows past possibility?

Fill in the blank to express possibility:
Sammy: "Do we have a bottle opener?"
Tom: "I don't know. There __________ be one in the drawer."

Lena: "That's strange. All the lights are off and they told us to arrive at 8."
Steve: "Nobody is home. We _________ have got the date wrong."

Fill in the blank to express possibility:
"Someone is at the door. It _________ be Kate. She said she would come by sometime this week."

Fill in the blank to express possibility:
Laura: "I can't find my purse. I had it five minutes ago when we bumped into that guy."
Bob: "He didn't look trustworthy. Do you think he _________ have stolen it?"

Fill in the blank to express certainty:
"They drank a lot of champagne last night. They _________ be really hung over today."

Fill in the blank to express possibility:
"Do you think he _________ got lost?"

Next Question

49 Comments on “English Grammar: Modal Verbs of Certainty – MIGHT, MAY, MUST, CAN”

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Thank you for this good and short lesson Jade. It could be effective for me after listening to it another time.

Thursday, October 17th 2019

88! Here is a cool quiz! Thx!

Thursday, October 17th 2019

Thanks for this episode!

Thursday, October 17th 2019

Thanks for this short and good lesson!

Thursday, October 17th 2019


Thursday, October 17th 2019

I really love this website!

Thursday, October 17th 2019

I woke up feeling tired. I might be dehydrated.

Thursday, October 17th 2019

    Then you should drink much water.

    Friday, November 8th 2019

Why is “could” false for no. 7? I thought “could” and “must” are both true…

Thursday, October 17th 2019

    Because they drank a lot last night, they must have been hangover. Cuz they drank a lot. you can’t drink too much and not get a hangover xD

    Friday, October 18th 2019

    The question is which one express certainty, and “could” expresses possibility, so it is wrong.

    Friday, October 18th 2019

    The 7 task is:
    “Fill in the blank to express certainty”


    Besides there is word “today” at the end.
    Caould is past simple of “can”

    Monday, October 21st 2019

Hi Dear Jade;

I have been away for ages since like three years ago, and I am so pleased to get back here again.
I have just encountered with an unexpected grammatical point in an essay received 7.5 in IELTS Academic, which I have not seen it anywhere yet.
The sentence is: “Regarding motivation, for instance, the museum cards, which are a moderately new trend, offering an entrance to national museums in a country and is valid for one year at a time.”
The strange part that comes to me distinguish is ” and is valid” which I guess that placed instead of ” which is”. I would gently appreciate in advance if you provide me with an assist on this.


Friday, October 18th 2019

I got 88 and mistake at number one. I thought almost sure mean sure so i choose certainly unfortunaly that must be probably. Thank Jane

Friday, October 18th 2019

Thank you !!!

Friday, October 18th 2019

Nice.I got 6 correct out of 8

Friday, October 18th 2019


Saturday, October 19th 2019

thanks got 88

Saturday, October 19th 2019

Nice lesson! I could have known more answers

Saturday, October 19th 2019

I think it’s a bad score when i get 63.

Saturday, October 19th 2019

    Same here

    Saturday, March 14th 2020

Thanks a lot Jade!

Sunday, October 20th 2019


Monday, October 21st 2019

What a nice shorty lesson.

Monday, October 21st 2019

thanks Ms. Jade for this useful lesson.

please, i have a question i’m a little bit confused about something which is that i know that might is the past tense of may but although we used this word to talk about the present and the same for the past we used may to talk about the past could you please, explain this point?


Wednesday, October 23rd 2019

Great. Thanks Jade!

Wednesday, October 23rd 2019

My first trial, I didn’t get a perfect score, so I watched the video again. I can’t have forgotten this topic.

Thursday, October 24th 2019

Hi Jade,
tks a lot for the lesson.
In questions 4 and 8 shouldn’t be “gotten” instead of “got”?
Best Regards!

Friday, October 25th 2019

    Hi Renan, British gramar, pp of get: got, same as sp got. Best regards.

    Thursday, October 31st 2019

      you’re right Hector.
      Didn’t know that.
      Tks a lot!

      Friday, November 1st 2019

I understand English grammar less.

Monday, October 28th 2019

great Jade you are great

Wednesday, November 6th 2019

Thank you for this episode.

Thursday, November 7th 2019

Thanks Jade :)

Monday, November 11th 2019

Good Morning Jade.
Thanks a lot for your class.
Have a wonderful day.

Monday, November 18th 2019

Thanks Jade, i learned something more

Tuesday, November 19th 2019

Thank you Jade, I learn a lot.

Sunday, December 22nd 2019

Om shanti..good lesson marvelous quiz..thanks

Tuesday, December 24th 2019

You said model verb have past perfect

Monday, December 30th 2019

I like this site. I get to practice what I watched. Please let me know if my grammar is correct. Thank you for your help. A happy New year to you Jade and to the rest.

Friday, January 3rd 2020

Thanks Jade, it’s very generous of you

Friday, March 6th 2020

I am very grateful for this lesson it improves my understanding of modal verbs i use to confuse these verbs i hope this course corrected some of my mistakes. i appreciate your hard work for us God bless you if you believe in him.

Tuesday, March 17th 2020

You were direct and precise.

Wednesday, April 8th 2020

thank you. it was very useful.

Saturday, April 11th 2020

Hello :) thank you for having done this lesson
I have a doubt concerning one sentence about “she would come”
“Someone is at the door. It _________ be Kate. She said she would come by sometime this week.”
Shouldn’t be..she would have come? (if not why)

Sunday, April 12th 2020

Jade is the best teacher!

Friday, April 17th 2020

    Hey Fagolo, are you really from Finland? Woow I have always been there, do you think it is kind of easy to reside there permanetly? Mexico is great but certainly, love that contry. Can you speak a bit about it?

    Tuesday, May 19th 2020

Good morning Jade.
Thanks so much for the great lesson.

Tuesday, June 2nd 2020

Jade, I like your accent, sometimes it seems difficult to understand but it’s nice. So I would like to request you whether it is good to say or not. Umm, I learned how to use must, may, might and can to show deduction in English but could you provide us other ways of using above modal verbs in different situation of our daily life. Good day!

Friday, June 26th 2020

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