You should tell your friends _________ with a ball in the street. It's too dangerous.

A．don't play      B．not play        C．not to play              D．to play

You should tell your friends ________ with a ball in the street．It's too dangerous．

1. A.
   don't play
2. B.
   not play
3. C.
   not to play
4. D.
   to play