Fire safety
- Children must / mustn't play near fires.
- Children must / mustn't play with matches.
- We must / mustn't go out quickly in a fire.
- We must / mustn't smoke in the forest.
- We must / mustn't take the lift in a fire.

mustn't, mustn't, must, mustn't, mustn't

put play throw fly play hate
1 Don't ______ with fire in the forest.
2 You cannot ______ stones into the water.

3 Firemen ______ out fires. They are brave (勇敢的).
4 Look at the sign. Don't ______ kites here.
5 James ______ lemons. They are too sour.

1. play 2. throw 3. put 4. fly 5. hates