题目内容
13．-Must I clean the floor now，monitor？-No，you _____．You can finish your homework first．（ ）
| A． | needn't | B． | mustn't | C． | can't | D． | shouldn't |
分析 句意：--班长，我现在必须打扫卫生吗？
--不，你不必．你可以先完成你的作业．
解答 答案：A．mustn't不可以，needn't不必，can't不能，shouldn't不应该，根据You can finish your homework first．可知在这里表示可以先完成作业，所以不必现在就扫地．故选A．
点评 本题考查情态动词的用法，要正确区分和辨别．本题应注意情态动词must的否定回答．
练习册系列答案
相关题目
3．We should study hard for future．（ ）
| A． | shall | B． | are supposed to | C． | could | D． | would better |
4．People under aged 18 should not be allowed ．（ ）
| A． | drives | B． | driving | C． | drove | D． | to drive |
1．When is Jay's concert？
It's ________ three o'clock ________ the afternoon．（ ）
It's ________ three o'clock ________ the afternoon．（ ）
| A． | at； in | B． | at； on | C． | in； in | D． | on； in |
18．-What are you going to do this weekend？
-I together with my classmates going to climb Mount Qian．（ ）
-I together with my classmates going to climb Mount Qian．（ ）
| A． | is | B． | am | C． | are | D． | were |
5．-Food safety is very important．
-So some rules to stop people from polluting food．（ ）
-So some rules to stop people from polluting food．（ ）
| A． | must make | B． | must be made | C． | must made | D． | be made |
2．-Your brother is an excellent basketball player．
-So he is．He_____ to play basketball three years ago．（ ）
-So he is．He_____ to play basketball three years ago．（ ）
| A． | has started | B． | starts | C． | started |
3．In order to make Dandong more beautiful，more trees and flowers ________ every year．（ ）
| A． | will plant | B． | should plant | ||
| C． | should be planted | D． | must plant |