My grandparents don't like to live in the ________ city. They like the peaceful countryside.

A.safe B.clean C.quiet D.noisy

Susan’s parents have bought a large house with a swimming-pool. It ____ be very expensive.

A.must B.can C.mustn’t D.can’t

There was too much noise just now. So I ________ hear the speaker very well.

A.needn't B.couldn't C.shouldn't D.mustn't

The plane is fast, but it's expensive. I ________ take a train to get there.

A.may B.need C.must D.should

________ you attend the meeting? I'm really looking forward to seeing you.

A.Will B.May C.Could D.Can

It's my turn to be on duty today. You ________ clean the classroom.

A.may not B.needn't C.mustn't D.can't

David, ________ you show me the way to use this machine?

A.could B.may C.should D.must

The society is developing fast. We________ keep learning to catch up with the development.

A.might B.had better C.could D.may

________we invite Jim and his sister to our game? They are also our friends.

A.Must B.Shall C.Would D.Need

Students ________ read more books because they can help them be better people.

A.must B.can C.may D.should