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be at home now. He went abroad on vacation last Friday.A.can’t B.mustn’t C.needn’t D.shouldn’t33.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.—Who’s the man over there? Is that Mr. Black? —It ________ be him. Mr. Black is much taller than that man.A.may B.must C.can’t D.mustn’t36.—________ I see your ID card? We have to check your personal information. —Sure. Here you are.A.May B.Need C.Should D.Must37.—I don’t care what people think.—Well, you _______ . Some opinions are worth weighing.A.should B.might C.could D.would38.It’s of great importance to protect the environment. Each of us ________ take an active part in it.A.can B.may C.would D.should39.—Do we have to finish this today?—Yes, you ________ . Today is the last day.A.would B.may C.can D.must40.—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.Need17.—Shall we go camping this summer holiday?—Nothing________be better.A.should B.could C.must D.may18.—Would you please________in that way? That’s not safe!—Sorry. I won’t do it any more.A.not driving B.not to drive C.no driving D.not drive19.— Ready? Let’s get started, Martin.— Swimming? I just ________mustn’t4.—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.should5.— 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’t6.—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 not7.— 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.shall8.—Be careful! Fire ________ be dangerous sometimes. —OK. I will put it out right away.A.mustn’t B.should C.can D.needn’t9.—Is it really necessary for me to go shopping with a mask on?—I’m afraid you ________ in public. It is not only to protect yourself but also to protect others.A.must B.should C.can D.need10.—Dad, must we wait until the light bees green? —Yes, I am afraid we ________. That’s the tra