【正文】 故選D。但是她很少唱英文歌。8．A解析：A【詳解】句意：——你能幫我一把嗎？我一個人貼不起海報?？疾榍閼B(tài)動詞辨析。故選C?？疾榍閼B(tài)動詞。2．B解析：B【詳解】句意：在交通燈變綠之前不要橫穿馬路。 for31．— 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．—The article says that a person’s animal sign decides his personality.—You ________ read it for fun, but don’t believe in that.A．can B．must C．shouldn’t D．needn’t35．—Mum, I bought some strawberries on my way home.—Oh, you’re so sweet. But the strawberries ________ be put into the fridge for freshness.A．must B．can C．may D．need36．— What do you think of the show yesterday?— Some of them were really good but others ________ be better.A．will B．must C．need D．can37．—I don’t care what people think.—Well, you _______ . Some opinions are worth weighing.A．should B．might C．could D．would38．We teenagers ________ have dreams. With dreams and hard work, anything amazing ________ be created.A．may。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.A．may B．can39。t C．shouldn39。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。mustn’t D．needn’t I。t B．can39。ve got many foreign coins．_______ I