【正文】 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’t33．— The sandstorm in Beijing is so serious this year.— Yes, I wonder when we ________ worry about the air we breathe.A．can’t B．mustn’t C．needn’t D．shouldn’t34．For the safety of the passengers, objects like guns ________ be carried on board.A．may not B．needn’t C．might not D．mustn’t35．—________ I see your ID card? We have to check your personal information. —Sure. Here you are.A．May B．Need C．Should D．Must36．You ________ drive after drinking alcohol(酒). It’s against the law.A．mustn’t B．needn’t C．couldn’t D．wouldn’t37．We teenagers ________ have dreams. With dreams and hard work, anything amazing ________ be created.A．may。t C．shouldn39。get used to it in winter.A．can’t B．needn’t C．mustn’t D．shouldn’t3．—Will my car be ready by the end of the day?—It ________ be, sir. I’ll call if there’s any problem.A．must B．could C．shall D．should4．We shouldn’t throw any 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．need5．—Dad, must we wait until the light bees green? —Yes, I am afraid we ________. That’s the traffic rule.A．may B．can C．have to D．need6．— ________ you give me a hand? I can’t put up the poster by myself.—No problem.A．Could B．Should C．Need D．Must7．— Is Lang Lang going to perform at Art Center this Friday?— Yes. It ________ be him. He has been here for three days.A．might B．must C．mustn’t D．may8．Exercise is helpful but it ________ be regular (規(guī)律的) exercise.A．must B．may C．can D．need9．— 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．shall10．You39。 againstC．be paid attention to。 or11．—Do we have to finish this today?—Yes, you ________ . Today is the last day.A．would B．may C．can D．must12．— Mom, must I clean my room now?— No, you ________. You can do it after dinner.A．needn’t B．mustn’t C．shouldn’t D．can’t13．A lot of online resources ________ be used either by teachers at school or parents at home.A．can B．should C．need D．must14．— Zoe, what do you think is the greatest advantage of shopping online?— At least I ______ spend much time going from shop to shop.A．shouldn’t B．can’t C．needn’t D．mustn’t15．Please don39。 of B．No, we mustn’t?？疾楹閼B(tài)動詞的被動語態(tài)和情態(tài)動詞跟動詞原形。used根據(jù)“I’ll call if there’s any problem”可知，是說話人按照事實有一定依據(jù)的推測，用should符合語境。這是交通規(guī)則。故選A?？疾榍閼B(tài)動詞辨析。10．D解析：D【詳解】句意：你最好從現(xiàn)在開始努力學(xué)習(xí)，否則你考試會不及格的。would將；may也許；can可能，可以；must必須。13．A解析：A【詳解】句意：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。shouldn39。15．B解析：B【詳解】句意：請不要發(fā)出那么多噪音。選項分析：A. must必須，一定。也就