“ You       smoke in the bedroom”, Rose said to her hushand and pushed him out of the room.

   A. needn’t          B. mustn’t         C. dare not         D. won’t

If you ________ smoke in the room, please keep the windows open.

If you ________ smoke in the room, please keep the windows open.

A．should            B．may              C．shall             D．must

You ________ smoke in the forest, or you will start a fire．

1. A.
   can't
2. B.
   needn't
3. C.
   mustn't
4. D.
   oughtn't to

“You ________ smoke in the bedroom,” Rose said to her husband and pushed him out of the room．

1. A.
   needn't
2. B.
   mustn't
3. C.
   dare not
4. D.
   won't