D Choose and write（用所给单词的适当形式填空）
last brush vegetable hour side
1. Lisa has strong teeth because she them two times a day.
2. Mike wrote his name on both of the card.
3. The sunny weather for three days last week.
4. I will eat more green . They are good for my health.
5. I spent two reading the storybook yesterday.

E Read and choose（读对话，选出正确答案）选做题
Mum: Please turn off the lights before you go out to play, Tom.
Tom: OK, Mum, I will. Why do we save electricity?
Mum: Because making electricity uses a lot of energy. When we save electricity, we save energy.
Tom: I see. I’ll do something else to save electricity.
Mum: Wow! What will you do?
Tom: I’ll turn off the computer and the TV when I don’t use them. And I’ll try to use natural light in the daytime.
Mum: Wonderful! These small things can help the Earth in a big way.
() 1. What does Mum ask Tom to do before he goes out to play?
A. Turn off the TV.
B. Turn off the lights.
C. Turn off the computer.
() 2. Why should Tom save electricity according to (根据) Mum?
A. To save energy.
B. To save money.
C. To be healthy.
() 3. What else will Tom do to save electricity in the daytime?
A. He will play outside.
B. He will try to use natural light.
C. He will turn on the computer and the TV.
() 4. How does Mum feel at the end?
A. Worried.
B. Calm.
C. Happy.