【正文】
hand? I can’t put up the poster by myself.—No problem.A.Could B.Should C.Need D.Must7.Exercise is helpful but it ________ be regular (規(guī)律的) exercise.A.must B.may C.can D.need8.You ________ write the report again because spelling mistakes are not allowed at all.A.must B.can C.may D.could9.Hurry up, or we ________ miss the beginning of the film.A.should B.must C.may D.have to10.When you visit a museum, some instructions should ________ and we’d better not ________ them.A.pay attention to。 against D.be paid attention to。t C.shouldn39。t C.needn39。 and B.working。ve discussed every detail of this plan and have got everything ready. But still something ________ go wrong. We still have to be very careful.A.must B.should C.would 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.— Mum, why do I have to wash hands so many times a day?—You ________ be too careful, for your health.A.can’t B.mustn’t C.may not D.needn’t26.—In China, many parents plain that their children have to stay up late to do the homework. —Don’t worry. The government has realized the problem. I’m sure there ________ be good news soon.A.can B.should C.need D.must27.—Is it usually warm in Yancheng in May??—Yes. But it _______ be rather cold sometimes.A.must B.should C.would D.can28.— Is the boy over there Tom? He often wears a jacket like that.— It _______ be him. He is absent from school today.A.needn’t B.shouldn’t C.mustn’t D.can’t29.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’t30.—Seventy dollars for such a dress! You ________ be joking!—I’m serious. It’s made of silk from Hangzhou.A.must B.need C.will D.can31.— What is that young lady’s job?— She ________ be a nurse, I’m not sure.A.must B.may C.need D.would32.Mr. Black ________ be at home now. He went abroad on vacation last Friday.A.can’t B.mustn’t C.needn’t D.shouldn’t33.— The sandstorm in Beijing is so serious this year.— Yes, I wonder when we ________ worry about the air we breathe.A.can’t B.mustn’t C.needn’t D.shouldn’t34.For the safety of the passengers, objects like guns ________ be carried on board.A.may not B.needn’t C.might not D.mustn’t35.—The article