1. 阅读下列短文，从每小题的三个选项中选出最佳选项。C
    Fire can bum down a lot of trees. It can hurt people too. We must be careful with fire. There are some fire safety rules. To stop fires:

♦We mustn't smoke in the forest.
♦We mustn't play near fires at home.
♦We mustn't play with matches at home.
♦We mustn't play with burning candles at home.
♦We mustn't put clothes on lamps or heaters.
♦We mustn't cook when no adults are at home.

1. （1） Fire can hurt people. We must be careful      fire.

   A . with B . of C . and
3. （2） We mustn't      near fires at home.

   A . plays B . playing C . play
5. （3） We       cook when no adults (成年人）are at home.

   A . must B . mustn't C . don't
7. （4） Which one is wrong (错误的)？

   A . Don't play with matches or burning candles at home. B . Don't put clothes on lamps or heaters. C . We can smoke in the forest.