Question 1

She _____ be at the library; I saw her car outside.

Accepted Answer

must

Answer

can't

Answer

might

Answer

may

Question 2

He _____ have taken your book; I saw him with a different one.

Accepted Answer

can't

Answer

may

Answer

must

Answer

might

Question 3

They _____ be on their way; they left an hour ago.

Accepted Answer

should

Answer

might

Answer

may

Answer

can't

Question 4

She _____ forgotten her keys at home; I don't see them anywhere.

Accepted Answer

must have

Answer

might have

Answer

should have

Answer

can't have

Question 5

He _____ be the one who broke the vase; he was the only one in the room.

Accepted Answer

must

Answer

might

Answer

could

Answer

should

Question 6

She _____ already left for the day; the lights are off and the door is locked.

Accepted Answer

must have

Answer

should have

Answer

might have

Answer

can't have

Question 7

They _____ be at the meeting; I confirmed their attendance yesterday.

Accepted Answer

must

Answer

might

Answer

can't

Answer

may

Question 8

The train _____ have left by now; it's already twenty minutes late.

Accepted Answer

must

Answer

couldn't

Answer

might

Answer

should

Question 9

She _____ be very busy today; she hasn't answered any of my calls.

Accepted Answer

must

Answer

may

Answer

can't

Answer

might

Question 10

He _____ have been the one who painted this; he loves art.

Accepted Answer

must

Answer

may

Answer

could

Answer

might

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