－Sam, do you want to go skating with us?

－Sorry, I can't．Tony told me that I _________ stay here until he comes back．

must

can

will

may

－Would you like to go with a tour group?

－_________．I enjoy looking around on my own．

That's a good idea

Well, it just depends

Sorry, l like to visit you

Well, I like to be independent

－Look! The man over there must be our headmaster．

－No, it _________ be him．He has gone to Beijing．

mustn’t

may not

shouldn’t

can’t

－I’m thinking of the test tomorrow．I’m afraid I can’t pass this time．

－_________! I’m sure you’ll make it．

Go ahead

Good luck

No problem

Cheer up

－Cathy, the door bell is ringing!I'm doing the dishes．

－Mum, I ________ see who it is．

would

will

am about to

am going to

－What about going to the cinema this evening?

－Oh, I don't know．I've got a bit of a headache．________ , John's coming to see me, so I ought to stay in．

However

In other words

What's more

Though

－The window is dirty．

－I know．It ________ for weeks．

hasn't cleaned

didn't clean

wasn't cleaned

hasn't been cleaned

－We have so much work to do．_________ he doesn’t come?

－Don’t worry．With Mrs．Green to help us, we can do without him．

How about

Why not

What if

As if

－Linda hasn’t shown up yet?

－It’s strange．She _________．

could

might

must have

should have

－I think computers play an important role in our life．Do you think so?

－Yes．________．

Great minds think alike．

The early bird catches the worm．

No pains , no gains．

Facts speak louder than words．