You ________ play on the road. It's dangerous. A car may hit you.

1. A.
   don't
2. B.
   needn't
3. C.
   mustn't
4. D.
   aren't

[　　]

You ________ play on the road. It's too dangerous.

1. A.
   needn't
2. B.
   should
3. C.
   may
4. D.
   mustn't

You ________ play on the road. It's too dangerous.

[　　]

You ________ play on the road．It's dangerous．

1. A.
   needs
2. B.
   mustn't
3. C.
   don't have to
4. D.
   may not