情态动词专项练习(含答案和解析) 一、选择题 1.Our Chemistry teacher always tells us we ________ be too hardworking before the exams. A.mustn’t B.shouldn’t C.needn’t D.can’t 2.To my joy, we_________ go to the bank. Mary has lent us some money. A.shouldn’t B.needn’t C.couldn’t D.wouldn’t 3.— Do we have to finish this today? — Yes, you ________ . Today is the last day. A.would B.may C.can D.must 4.Sorry, smoking is not allowed here. If you ________ , you will be fined according to the rules. A.can B.will C.may D.must 5.— Is it really necessary for me to go shopping with a mask on? — I’m afraid you ________ in public. It is not only to protect yourself but also to protect others. A.must B.should C.can D.need 6.Hurry up, or we ________ miss the beginning of the film. A.should B.must C.may D.have to 7.— 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.should 8.— Must the children leave at six tomorrow morning? — No, they _______. They can have more time to get ready for the trip. A.can’t B.needn’t C.mustn’t D.may not 9.You ________ be careful with the camera. It costs! A.can B.will C.should D.may 10.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.need 11.You ________ drive after drinking alcohol(酒). It’s against the law. A.mustn’t B.needn’t C.couldn’t D.wouldn’t 12.— Dad, must we wait until the light becomes green? — Yes, I am afraid we ________. That’s the traffic rule. A.may B.can C.have to D.need 13.Exercise is helpful but it ___...