You ( mustn't ) step on the grass.
You ( must) put the books back after you have read them.
You ( mustn't ) talk to the driver when the school bus is moving.
You ( must) clean the classroom every day.
You ( must) wait in line for the school bus.
You ( mustn't) talk too loudly in the reading room.
You (mustn't ) draw on the blackboard.
You ( must) return the books in time.
must的意思是一定要,而mustn't的意思不是不一定要而是不可以
英语. 用must,must't回答 You ( ) draw on the blackboard. You ( ) return the books in time.
英语. 用must,must't回答 You ( ) draw on the blackboard. You ( ) return the books in time.
You () step on the grass.
You () put the books back after you have read them.
You () talk to the driver when the school bus is moving.
You () clean the classroom every day.
You () wait in line for the school bus.
You () talk too loudly in the reading room.
You () step on the grass.
You () put the books back after you have read them.
You () talk to the driver when the school bus is moving.
You () clean the classroom every day.
You () wait in line for the school bus.
You () talk too loudly in the reading room.
英语人气：740 ℃时间：2019-10-04 11:19:16
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