— Excuse me．Is this the right way to the Summer Palace?— Sorry,I'm not sure．But it ________ be．

A．might

B．will

C．must

D．can

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

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

A．has to be

B．will be

C．mustn't be

D．could be

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

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

— something ________ to him．

A．must happen

B．should have happened

C．could have happened

D．must have happened

If I ________ plan to 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

— Don't you think it necessary that he ________ to Miami but to New York?

— I agree,but the problem is ________ he has refused to．

A．will not be sent;that

B．not be sent;that

C．should not be sent;what

D．should not send;what

Tom,you ________ leave all your clothes on the floor like this!

A．wouldn't

B．mustn't

C．needn't

D．may not

You ________ this morning,if you really wanted to see it yourself．

A．ought to come

B．could come

C．ought to have come

D．may have come

— I promise that she ________ get a nice present on her birthday．

— Will it be a big surprise to her?

A．should

B．must

C．would

D．shall

I don't think the present will come．but in case he ________,let him sit in the front row．

A．will

B．does

C．would

D．might