【正文】
eople like shopping online because they ________ spend much time going from shop to shop.A.needn’t B.can’t C.mustn’t D.shouldn’t24.— 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’t25.—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.must26.—Is it usually warm in Yancheng in May??—Yes. But it _______ be rather cold sometimes.A.must B.should C.would D.can27.— 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’t28.You ________ pay too much attention to protecting yourself if you plan to go abroad.A.mustn’t B.can’t C.shouldn’t D.needn’t29.—Must the children leave at six tomorrow morning?—No, they _______. They can have more time to get ready for the trip.A.can’t B.needn’t C.mustn’t D.may not30.—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。ll fetch them for you.A.May B.MustC.Should D.Need2.To my joy, we_________ go to the bank. Mary has lent us some money.A.shouldn’t B.needn’t C.couldn’t D.wouldn’t3.— Why didn’t you tell it to me earlier?— Why ________ I? I want to have my own secret.A.can B.may C.should D.shall4.—Mum, why do I have to wear a mask before entering the supermarket?—For your health and safety, you ________ be too careful.A.shouldn’t B.can’t C.mustn’t D.needn’t5.—Hurry up, Jack! Let’s cross the road as fast as possible.—No, you ________. Don’t you see the light is still red?A.couldn’t B.wouldn’t C.mustn’t D.needn’t6.—The high school entrance examination is ing!— Yes, our teacher tells us we ________ be too careful while taking exams.A.mustn’t B.shouldn’t C.needn’t D.can’t7.—Be careful! Fire ________ be dangerous sometimes. —OK. I will put it out right away.A.mustn’t B.should C.can D.needn’t8.We shouldn’t throw any 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.need9.— Excuse me, could you tell me where the Nanjing Brocade Museum is?— Go along this road for five minutes. You ________ miss it. It’s a huge building.A.mustn’t B.can’t C.needn’t D.shouldn’t