【正文】 二個(gè)空用動詞短語be against “反對”。12．D解析：D【詳解】句意：當(dāng)你參觀博物館時(shí)，應(yīng)該注意一些說明，我們最好不違反它們。根據(jù)“I think they are enough. ”可知，第一處表示“不需要”，排除BD。因?yàn)閷⒔姆种恍枰蘩怼Ｎ覀儾恍枰鲞@么多椅子。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。故選C。may可能；can能夠；should應(yīng)該；might可能；has to不得不；must必須。有夢想和努力，任何驚人的事都能被創(chuàng)造。根據(jù)“She always es back home at this time.”可知，此處表示非?？隙ǖ耐茰y，故選C?？疾榍閼B(tài)動詞辨析?！欢ㄊ俏覌寢?。根據(jù)下文“Don’t you see the light is still red”可知，現(xiàn)在是紅燈，禁止過馬路，故選C?！唬悴荒苓@樣，你沒有看到是紅燈嗎？考查情態(tài)動詞。故選B。shouldn’t不應(yīng)該；can’t不能；mustn’t不允許；needn’t不必。6．B解析：B【詳解】句意：——媽媽，為什么我進(jìn)超市前要戴口罩？ ——為了你的健康和安全，你再小心也不為過。can’t不能；needn’t不必；mustn’t禁止；may not可能不會。他們可以有更多的時(shí)間為旅行做準(zhǔn)備。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。4．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。would將；may也許；can可能，可以；must必須。今天是最后一天。故選B。need需要；may可能；should應(yīng)該；must一定。汽車可能撞到你。分析“…you will fail the exam”可知，如果不努力就會不及格，or“否則”符合語境，故選D。had better do sth最好做某事，排除BC。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．may23．—Suzy described every detail of the accident just now.—Her memory ________ be pletely back.A．shall B．need C．must D．could24．—Is that Mr Zhou?—It ________ be him. He has gone to Beijing.A．can B．may C．can’t D．shouldn’t25．—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．need26．When people are waiting at the zebra crossing, cars and buses ________ wait and let them go first.A．must B．may C．can D．need27．—Shall I tell him the change of the time right now?—I’m afraid you ________, otherwise he will be late for the meeting.A．can B．may C．must D．need28．— Will dad arrive home at 6 o’clock to have dinner with us this evening?— I think he will, but he ________ not. Sometimes he works extra hours.A．can B．must C．need D．may29．You ________ be careful with the camera. It costs!A．can B．will C．should D．may30．— Excuse me. I haven’t finished reading the book yet. May I keep it a bit longer?— Sorry, you ________. You must return it on time.A．needn’t B．can’t C．won’t D．shouldn’t31．— 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．must32．—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’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 winte