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故選B。考查情態(tài)動詞。故選C。mustn’t禁止;should應(yīng)當(dāng);can會、能;needn’t不需要。我馬上把火撲滅。10.C解析:C【詳解】句意:——小心!火有時候會很危險。第一個空表示“應(yīng)該”,用should;第二個空表示能力,用can??疾榍閼B(tài)動詞。9.C解析:C【詳解】句意:我們青少年應(yīng)該有夢想。根據(jù)“For your health and safety, you...be too careful.”可知,為了你的健康,你再怎么小心也不為過,“can’t...too...”表示“再……也不為過”??疾榍閼B(tài)動詞辨析。故選C。may可以;must必須(有義務(wù)、有必要);have to不得不(客觀情況驅(qū)使);should應(yīng)該。7.C解析:C【詳解】句意:——你覺得我的新裙子怎么樣? ——好吧,如果我不得不說的話,它不適合你??疾榉侵^語動詞及動詞的基本形式。根據(jù)“It...be Jane. But she seldom sings English songs.”可知,此處表示不確定的推測,且是肯定句,故選C??疾榍閼B(tài)動詞?!赡苁呛?。故選A。must必須;should應(yīng)該;can可以;need需要。這不僅是保護自己,也是保護他人。故選D。can能、會;will將要;may可以;must必須、一定。如果你一定要抽的話,你會被按規(guī)定罰款的。can的否定式和too或enough 連用表示“多么……也不為過”,其他情態(tài)動詞沒有這種用法,故答案選A?!笨疾榍閼B(tài)動詞。根據(jù)“Yes.”和“He has been here for three days.”可知,此處表示非常肯定的推測,故選B??疾榍閼B(tài)動詞。一定是他。 for D.No, we needn’t。 of B.No, we mustn’t。 must D.may not。 can B.may not。ll fetch them for you.A.May B.MustC.Should D.Need19.—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 drive20.—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’t21.—Is it usually warm in Yancheng in May??—Yes. But it _______ be rather cold sometimes.A.must B.should C.would D.can22.— What is that young lady’s job?— She ________ be a nurse, I’m not sure.A.must B.may C.need D.would23.— Listen! Tom ________ be listening to the music while doing his homework.— Let’s go upstairs to remind him to turn it off.A.should B.could C.would D.must24.We39。t18.—Amy, I hear you39。t C.needn39。t17.—The high school entrance examination is ing!—Yes, our teacher tells us we _______ be too careful while taking exams.A.mustn39。t C.shouldn39。t make so much noise. I ________ hear the speaker very well.A.needn39。 and D.work。 and B.working。 has to10.—Be careful! Fire ________ be dangerous sometimes. —OK. I will put it out right away.A.mustn’t B.should C.can D.needn’t11.—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.should12.You39。 should C.should。 to hold7.—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.should8.—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’t9.We teenagers ________ have dreams. With dreams and hard work, anything amazing ________ be created