(   ) 2. The three R's ― reduce, reuse and _______ ― are very important.

A. recycling    B. recycle

C,recycles      D. recycled

(   ) 1. I'm writing an article      people understand the importance of protecting forests.

A. help    B. helped

C. helping    D. to help

5. It was so hot      I asked Kate for lots of orange juice.

4. Tom likes sports      his brother likes music.

3. Hurry up，      you'll be late for class.

2. ―Would you like to go to the park with me?

―Pd love to,      I have to finish my homework first.

1. Work hard，       you'll make much progress.

5. People can enjoy different outdoor activities in fall.___________  (例如) ，they can go for a walk or go hiking.

4. ―What are they talking about?

―They are talking about       ____  (保護(hù)環(huán)境）.

3. We should get up early___________  (以便)we can get to the bus stop in time.