Complete the sentences.
1.废弃物对我们的环境有害。
It is harmful toour environment.

2.不要点自己吃不完的食物。
Do not order more food than you can finish.

3.在你买新东西之前,想一想是否有必要。Before you buy something_ new , thinkwhether it is necessary.

4.使用物品时间尽可能长些。
Use things for as long aspossible

5.保养物品,以便能使用更长时间。
Look after them,sothat they will last .

6.用瓷杯更好,因为它们可以重复使用许多次。It isbetter to_use china cups
because they can be used many times.