1 . With the loss of blood, he couldn’t __________ (survive) for very long after being shot. (所给词的适当形式填空)

2 . The villagers are extremely thankful to Mr. Jason, without whose help the road to the village_________.

A．can’t be built

B．couldn’t have been built

C．mustn’t be built

D．mustn’t have been built

3 . —How do you find the club?
—I        it. Everyone is saying its management is going from bad to worse.

A．couldn’t have joined	B．might have joined
C．would rather not have joined	D．would like to have joined

4 . —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