Question 1

Paul is behaving in a very unusual way. I think he ______ again.

Accepted Answer

might be drinking

Answer

can't drink

Answer

can be drinking

Question 2

If Suzan said that, it ______ true. She never lies.

Accepted Answer

must be

Answer

might be

Answer

can be

Question 3

I'm not sure I trust Peter. He ______ the person we think he is.

Accepted Answer

might not be

Answer

must not be

Answer

can't be

Question 4

Nobody knows exactly why he died. But we think it ________ been an accident.

Accepted Answer

might have

Answer

can have

Answer

should have

Question 5

I __________ revised more for the exam. I was lazy, and now I'll fail!

Accepted Answer

should have

Answer

couldn't have

Answer

might have

Question 6

Sarah looked very happy. She __________ passed her driving test.

Accepted Answer

must have

Answer

should have

Answer

can't have

Question 7

I didn't know you were going to Phil's party yesterday. You ________ told me!

Accepted Answer

should have

Answer

must have

Answer

can't have

Question 8

You _________ been ill yesterday. Jessie saw you at the bowling alley.

Accepted Answer

couldn't have

Answer

may not have

Answer

mustn't have

Question 9

The window was broken, so the thieves _________ got in through that window.

Accepted Answer

must have

Answer

may have

Answer

couldn't have

Question 10

She _______ have to work today, but I'm not sure.

Accepted Answer

may

Answer

couldn't

Answer

must

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