【正文】 北師大版九年級情態(tài)動詞練習(xí)題及答案解析一、選擇題1．If you buy your mum an iRobot floor cleaner, she ________ sweep the floor every day.A．can’t B．mustn’t C．needn’t D．shouldn’t2．Don’t cross the road until the traffic lights turn green. A car_______hit you.A．need B．may C．should D．must3．—I must go to school today, ________?—No, you can go as soon as you get well.A．mustn’t I。needn’t B．needn’t I。needn’tC．mustn’t I。mustn’t D．needn’t I。mustn’t4．—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．should5．— 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’t6．—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’t7．—The high school entrance examination is ing!— Yes, our teacher tells us we ________ be too careful while taking exams.A．mustn’t B．shouldn’t C．needn’t D．can’t8．— ________ you give me a hand? I can’t put up the poster by myself.—No problem.A．Could B．Should C．Need D．Must9．—Who is singing next door? It sounds like a young girl’s voice.—It _________ be Jane. But she seldom sings English songs.A．need B．must C．may D．can10．You39。d better __________ hard from now on, __________ you will fail the exam.A．work。 and B．working。 or C．working。 and D．work。 or11．—Do we have to finish this today?—Yes, you ________ . Today is the last day.A．would B．may C．can D．must12．— 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’t13．Please don39。t make so much noise. I ________ hear the speaker very well.A．needn39。t B．can39。t C．shouldn39。t D．mustn39。t14．—The high school entrance examination is ing!—Yes, our teacher tells us we _______ be too careful while taking exams．A．mustn39。t B．shouldn39。t C．needn39。t D．can39。t15．We’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．may16．—Amy, I hear you39。ve got many foreign coins．_______ I have a look?—Of course, I39。ll fetch them for you．A．May B．MustC．Should D．Need17．My bike was broken yesterday，so I____walk home． A．might B．had to C．must D．could18．Dr. Zhong Nanshan once said, To prevent the spread of this disease, we________never be too careful.A．can B．may C．must D．should19．Think twice before making a decision, or you __________ get into trouble.