You_____open the door before the train gets into the station.A.don't have to B.mustn't C.needn't D.may not

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You_____openthedoorbeforethetraingetsintothestation.A.don''thavetoB.mustn''tC.needn''tD.maynotYou_____o

You_____open the door before the train gets into the station.A.don't have to B.mustn't C.needn't D.may not
You_____open the door before the train gets into the station.
A.don't have to B.mustn't C.needn't D.may not

You_____open the door before the train gets into the station.A.don't have to B.mustn't C.needn't D.may not
B 由题意 你在火车开进站前禁止打开门 B.mustn't 表示禁止

B
在火车到站前你不能开门

B