4. Tom's mother  (在........ 中起作用) his success.

3. The book  (花费) me 19  yuan.

2. The country is rich in oil and   (煤) .

Ⅱ.根据句意及汉语提示完成句子

1. There are tea leaves in the  (底部) of my cup.

6. I am glad to know I played a part in (help) you get better.

5. How can we stop people from (litter) any more ?

4. There are no more fish for  (fisherman ) to catch because of pullution.

3. I remembered  ( turn off ) the lights when I left the classroom.

  —Let's go for a walk.

1. Don’t take   ( wood ) chopsticks when you buy takeaway food.