【正文】 C解析：C【詳解】句意：我認(rèn)為所有的學(xué)生都喜歡周末，因?yàn)閷λ麄儊碚f，他們不必在周六或周日早起?？疾榍閼B(tài)動詞。這是杭州的絲綢做的。我可以再借一段時間嗎？—— 抱歉，你不可以?！堑模蚁胫朗裁磿r候我們不需要擔(dān)心我們呼吸的空氣。35．A解析：A【詳解】句意：——我可以看你的身份證嗎？我們必須檢查一下你的個人信息?？疾榍閼B(tài)動詞。故選C。t沒必要。mustn’t不能，表禁止；can’t不能，表能力；shouldn’t不應(yīng)該，用于建議；needn’t無需，指沒有必要?？疾榍閼B(tài)動詞。can39。有夢想和努力，任何驚人的事都能被創(chuàng)造。may可以，表請求或許可；need需要，指有必要；should應(yīng)該，表建議；must必須，強(qiáng)調(diào)主觀意愿。34．D解析：D【詳解】句意：為了乘客的安全，嚴(yán)禁攜帶槍支等物品登機(jī)。根據(jù)“You must return it on time.”可知，不可以再借一段時間， can’t不允許，不可以。31．B解析：B【詳解】句意：——那位年輕女士的工作是什么？——她可能是個護(hù)士，我不確定?！唬悴荒苓@樣，你沒有看到是紅燈嗎？考查情態(tài)動詞。根據(jù)“get”可知，此處是needn’t do sth短語，故選C。我相信很快就會有好消息。25．C解析：C【詳解】句意：切勿將物體從建筑物中扔出去。如果你喜歡，你可以明天完成一些。根據(jù)“Must we stop the Japanese government discharging nuclear waste water into the Pacific Ocean”可知，對于日本政府向太平洋排放核廢料這個行為，我們是必須要阻止的，用must表示“必須”。20．A解析：A【詳解】句意：你必須重新寫報告，因?yàn)楦静辉试S有拼寫錯誤。can39。He must be at home. 他一定在家。D. may可以，能夠。needn’t不必，指沒必要；can’t不能，指不能夠；shouldn’t不應(yīng)該，表建議；mustn’t不能，表禁止。t不需要；mustn39。根據(jù)“be used either by teachers at school or parents at home.”可知，指很多在線資源既可以供學(xué)校的老師使用，也可以供家長在家使用。你可以在晚飯后做。and和；or否則。故選A。他在這里已經(jīng)三天了。6．A解析：A【詳解】句意：——你能幫我一把嗎？我一個人貼不起海報。當(dāng)從很高的高度掉落時，即使一個小的物體可能導(dǎo)致嚴(yán)重的傷害或死亡。in2．A解析：A【詳解】句意：——準(zhǔn)備好了嗎？我們開始吧，馬丁。 for22．— 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．must23．—Must I finish all my homework today, Mum?—No, you ________, my dear. You can finish some tomorrow if you like.A．needn’t B．shouldn’t C．can’t D．mustn’t24．—Is that Mr Zhou?—It ________ be him. He has gone to Beijing.A．can B．may C．can’t D．shouldn’t25．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．need26．—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．I think all the students love the weekends because, to them, they ________ get up early on Saturdays or Sundays.A．mustn’t B．don’t need C．needn’t D．can’t28．— 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．—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’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．— Excuse me. I haven’t finished