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ht B.must C.mustn’t D.may7.Exercise is helpful but it ________ be regular (規(guī)律的) exercise.A.must B.may C.can D.need8.— Mom, must I clean my room now?— No, you ________. You can do it after dinner.A.needn’t B.mustn’t C.shouldn’t D.can’t9.You ________ require others to do with the problem like you. Everyone has his own way.A.mustn’t B.needn’t C.may not D.shouldn’t10.It’s amazing that the pen ________turn voice into text with few mistakes.A.can B.must C.may D.need11.—Could I join you in the programme?—Sorry, you ________. You are too young.A.shouldn’t B.mustn’t C.can’t D.needn’t12.—Have you decided to take up teaching as career after graduation? —I ________ go abroad for further education instead. But it depends.A.must B.should C.may D.shall13.Please don39。t D.mustn39。t D.can39。t C.can D.may23.—Is that Mr Zhou?—It ________ be him. He has gone to Beijing.A.can B.may C.can’t D.shouldn’t24.Never throw objects from the building. Even a small object ________ cause serious injuries, or death, when dropped from a great height.A.must B.should C.may D.need25.—Will Jim e to Yangzhou for a holiday?—He ________e and it depends on how much homework he will have.A.may B.should C.must D.need26.—Is it usually warm in Yancheng in May??—Yes. But it _______ be rather cold sometimes.A.must B.should C.would D.can27.When people are waiting at the zebra crossing, cars and buses ________ wait and let them go first.A.must B.may C.can D.need28.—Shall I tell him the change of the time right now?—I’m afraid you ________, otherwise he will be late for the meeting.A.can B.may C.must D.need29.—How do you like my new dress? —Well, if I ________ say, it is not suitable for you.A.may B.must C.have to D.should30.—Must we stop the Japanese government discharging nuclear waste water (排放核污水) into the Pacific Ocean?—________. Because everyone should protect our earth and it is bad ________ us to eat the polluted seafood and drink the waste water.A.Yes, we can。 for31.A hardworking man ________ bee a great scientist, but a great scientist ________ be a hardworking man.A.can’t。 can32.You’ve got an A in the maths test again. You ________ be good at it.A.can B.may C.must D.should33.For the safety of the passengers, objects like guns ________ be carried on board.A.may not B.needn’t C.might not D.mustn’t34.—How beautiful the winter jasmines (迎春花) are!—Yes. These goldenyellow flowers ________ be widely seen in my city in March.A.must B.can C.would D.should35.—________ I see your ID card? We have to check your personal information. —Sure. Here you are.A.May B.Need C.Should