一、从方框中选择合适的短语，并用其适当形式填空，补全句子。
these days pick up do with turn off eat up
1. I don't know what to these empty plastic bottles.
2. Tom, you should all your food and never waste any.
3. the lights when you leave to save energy and money.
4. They will all the trash after having a picnic in the park.
5. , students often use computers to finish their homework.

1. do with 2. eat up 3. Turn off 4. pick up 5. These days

二、从方框中选择合适的单词，并用其适当形式填空，补全短文。（有一项多余）
green how Earth throw glass what grey
Hello, boys and girls. The 1. is our only home. Let's work together to make it better. Here are some tips.
• Keep our city clean. Don't drop rubbish on the ground—put it in the bin. 2. a clean place it will be!
• Live a 3. life. Let's walk more. Let's save water and electricity. 4. happy our Earth will be!
• Don't 5. old things away. Give them new life. We can make a vase with a 6. bottle or share old toys with other children.

Small actions(行动) can make a big difference. Let's start today!

1. Earth 2. What 3. green 4. How 5. throw 6. glass