【正文】 可以、不允許；won’t不會；shouldn’t不應該。20．D解析：D【詳解】句意：當你參觀博物館時，應該注意一些說明，我們最好不違反它們。18．B解析：B【詳解】句意：——你媽媽這周六將在家嗎？——很難說。否定詞+比較級表示最高級的意思，此句表示“沒有比這更好的了”，用could表示一種委婉的說法。15．A解析：A【分析】【詳解】句意：――埃米，我聽說你有許多外國硬幣，我可以看一看嗎？――當然，我去給你拿來。But still something may go 。因此用may be表示推測；選項B/C/D不符合語境。根據(jù)“while taking exams”可知這里應用can39。根據(jù)下文“It’s a huge building”，可知不可能錯過這么大的一座建筑，ACD三項不合語境，故選B。根據(jù)上文“Please don39。9．C解析：C【詳解】句意：——你為什么不早點告訴我？ ——我為什么應該告訴你？我想要保守我自己的秘密。can39。had better do sth最好做某事，排除BC。故選A。mustn’t不能，表禁止；shouldn’t不應該，表建議；needn’t不必，指沒有必要；can’t不能，表沒有能力或不許可?！玫?。第二空即可寫成dare climb也可寫成dares to climb，故選A。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．may27．— 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’t28．—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．need29．—There is a knock at the door.—It ________ be my mom. She always es back home at this time.A．may B．may not C．must D．can’t30．Look at the floor, Tom! ________ you watch TV while having a meal?A．Should B．Could C．Must D．May31．— What is that young lady’s job?— She ________ be a nurse, I’m not sure.A．must B．may C．need D．would32．Cars ________ give way to walkers on some roads in Binhai, or the drivers will be fined.A．may B．will C．can D．must33．Sometimes smiles ________ be false, hiding other feelings like anger, fear or worry.A．should B．would C．must D．can34．—Could you tell me how to renew the library books?—With pleasure. You ________ e to our desk every time. It’s easier to renew them online.A．can’t B．mustn’t C．needn’t D．shouldn’t35．—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．should36．—I don’t care what people think.—Well, you _______ . Some opinions are worth weighing.A．should B．might C．could D．would37．We teenagers ________ have dreams. With dreams and hard work, anything amazing ________ be created.A．may。t D．mustn39。t11．— 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’t12．—The high school entrance examination is ing!—Yes, our teacher tells us we _______ be too careful while taking exams．A．mustn39。 mustn39。 and B．working。 dares to climbB．dare t