1 . I knew she was in because I heard the radio, but she didn’t open the door. She _______ the bell.

A．might not hear

B．mustn’t have heard

C．couldn’t hear

D．may not have heard

2 . Now, look at our purchase.We _________so much food and drinks now that Emily won't be with us for dinner.

A．needn't have bought	B．might have bought
C．could have bought	D．ought to have bought

3 . —Where is my dictionary?I remember I put it here yesterday.
—You___it in the wrong place.

A．must put	B．should have put
C．might put	D．might have put

4 . 【2011江苏卷,34】——I left my handbag on the train, but luckily someone gave it to a railway official.
——How unbelievable to get it back! I mean, someone ______ it.

A．will have stolen	B．might have stolen
C．should have stolen	D．must have stolen

5 . --I once got lost during my first visit to Beijing.
-- Oh, did you? You ____ me as your guide.

A．might have asked

B．could ask

C．would have asked

D．would ask