－Do you know where David is?I couldn't find him anywhere．

－Well．He ________ have gone far－his coat's still here．

A．shouldn't

B．mustn't

C．can't

D．wouldn't

I agree ________ what you said and well agree ________ the plan for our picnic．

A．on; on

B．on; with

C．with; on

D．with; with

I would rather ________ home than ________ out on such a wet day．

A．stay; go

B．stay; to go

C．staying; going

D．to stay; to go

－I've taken someone else's green sweater by mistake．

－It ________ Harry's．He always wears green．

A．could be

B．will be

C．mustn't be

D．has to be

I ________ have been more than six years old when the accident happened．

A．shouldn't

B．couldn't

C．mustn't

D．needn't

－Mum, I've been studying English since 8 o'clock．________ I go out and play with Tom for a while?

－No, I'm afraid not．Besides, it's raining outside now．

A．Can't

B．Wouldn't

C．May not

D．Won't

－How far apart do they live?

－________ I know, they live in the same neighbourhood．

A．As long as

B．As far as

C．As well as

D．As often as

It was unbelievable that the fans waited outside the gym for three hours just ________ a look at the sports stars．

A．had

B．having

C．to have

D．have

________ from heart trouble for years, Mr White has to take some medicine with him wherever he goes．

A．Suffered

B．Having suffered

C．Suffering

D．Being suffered

－Is Jack on duty today?

－It ________ be him．It's his turn tomorrow．

A．mustn't

B．won't

C．can't

D．needn't