13．Most of the relief work was done by　　　　 (志愿者).

12．Some students find I t difficult to remember the　　　　 (不规则)verbs.

11．Industrial emissions can p　　　　 the air.

10．What the new teacher said i　　 　　me deeply.

9．We must stop him from seeing her　　　　 (以某种方式).

8．The curtains have　　　　 (褪色)in the sun.

7．He looked through the dictionary and took out his mobile to d　　　　 Mr Stevernson’s telephone number

6．Don’t lie to her, she’s 　　　　　(注定会)to find out all about it.

5．a red sky at night often　　　　 (表明，暗示)to find out all about it.

4．You can get a doctor here to　　　　 (做手术)on her.