It's not ________ to throw away old things everywhere. Some of them can be reused.
A.lazy B.proper C.clever D.brave
Lucy always gives people a hand when they are in need. How ________ she is!
A.upset B.weak C.active D.kind
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
