If I ________ plan to do anything I wanted to, I'd like to go to Tibet and travel through as much of it as possible．

A．would

B．could

C．had to

D．ought to

The weather turned out to be fine yesterday．I ________ the trouble to carry my umbrella with me．

A．should have taken

B．could have taken

C．needn't have taken

D．mustn't have taken

I was on the highway when this car went past followed by a police car．They ________ at least 150 kilometers an hour．

A．should have been doing

B．must have been doing

C．could have been done

D．would have done

He paid for a seat, when he ________ have entered free．

A．could

B．would

C．must

D．need

He ________ have completed his work; otherwise, he wouldn't be enjoying himself by the seaside．

A．should

B．must

C．wouldn't

D．can't

－I don't mind telling you what I know．

－You ________．I am not asking for it．

A．mustn't

B．may not

C．can't

D．needn't

－Lucy doesn't mind lending you her dictionary．

－She ________．I've already borrowed one．

A．can't

B．mustn't

C．needn't

D．shouldn't

When he was there, he ________ go to that coffee shop at the corner after class．

A．would

B．should

C．had better

D．might

We forget to bring our tickets, but please let us enter, ________?

A．do you

B．can we

C．will you

D．shall we

You can't imagine that a well-behaved gentleman ________ be so rude to a lady．

A．might

B．need

C．should

D．would