用所给动词的适当形式填空。

1. Would you like ______(clean) up the city parks?

2. Could you please______(give) out food at the food bank?

3. We can't put off _______(make) a plan.

4. Two weeks ______(be) enough for us.

5. They ______(set) up a food bank next year.

6. He spends about two hours______(do) his homework.

7. Han Mei ______(say) she has learned more about animals.

8. I have______(run) out of all the money.

9. All the students will go out and play if it stops______(rain) later.

10. David has been______(try) to cheer him up for ten minutes.

下列海洋资源中属于可再生资源的是（　　）

A．海底石油、天然气

B．潮汐能

C．滨海砂矿

D．锰结核