(2019广东)Dirty air and water are harmful. They ________ kill plants, and even people.
A.can B.can't C.should D.shouldn't
(2019淮安)—Will you stay here for dinner with us?
—Sorry, I ________. My mother is waiting for me at home.
A.mustn't B.can't C.needn't D.couldn't
(2019南充)—Mum, may I play computer games this evening?
—No way, you ________ finish your homework.
A.can B.must C.may D.will
(2019连云港)According to the notice, guests at this hotel ________ use the sports center at no extra cost.
A.can B.should C.must D.need
you, tell, how, get to, can, the post office, me, to
________________________________________________________________________?
where, could, she, park, her, asked, me, car, she
________________________________________________________________________.
