1 . Mr. Black ________ home because his briefcase is still on the desk.

A．mustn’t have gone	B．can’t have gone
C．shouldn’t have gone	D．needn’t have gone

2 . —Did you hear that Jack used to be a policeman for two years?
—You’re kidding! He ______, for he’s too short.

A．can’t be	B．can’t have been
C．may not be	D．may not have been

3 . Listen, Mary ______ have done it. She’s been with me at the shop all day.

A．wouldn’t	B．shouldn’t
C．needn’t	D．couldn’t

4 . He ________ without saying goodbye to them, for he always has good manners.

A．can’t have left	B．may not have left
C．shouldn’t have left	D．mustn’t have left

5 . — They are said to have been familiar with each other.
— But they_________. They were introduced only hours ago.

A．may not have been	B．couldn’t have been
C．mustn’t have been	D．needn’t have been

6 . A kind-hearted passenger paid for Tim’s ticket, without which he _____ the last train.

A．couldn’t have caught	B．didn’t catch
C．couldn’t catch	D．hadn’t caught

7 . I didn’t see her in the meeting room this morning. She _____ at the meeting.

A．mustn’t have spoken	B．shouldn’t have spoken
C．needn’t have spoken	D．couldn’t have spoken

8 . — Lucy looks so upset. She ______ the driving test.
— It is the second time that she has failed in the test.

A．can’t pass	B．mustn’t pass
C．can’t have passed	D．mustn’t have passed

9 . ―Do you know where David is? I couldn’t find him anywhere.
―Well. He ______ have gone far — his coat’s still here.

A．needn’t	B．can’t
C．mustn’t	D．wouldn’t

10 . He __________present at the meeting this morning; he is on a business trip this week.

A．can’t have been

B．mightn’t have been

C．mustn’t have been

D．needn’t have been