4. When I opened the door, I found my father sitting in his chair, completely ____in the humorous stories he was reading.

A. absorbed　　　　　 B. losing　　　　　 C. attracted　　　　　　 D. busy

[解析]选A。考查动词短语结构的辨析。be absorbed in全神贯注于，专心于。B项应为be lost in, C项attracted应为be attracted by，而busy (in) doing sth. 忙于做某事。

3. New technology ____to make sure that the cars, taxis and trains we use ____the air.

A. is used; not to pollute

B. has used; is not polluted

C. is being used; do not pollute

D. has been used; to pollute

[解析]选C。be used to do被用来做……, make sure后为宾语从句，缺少谓语动词，故选C。

2. Thanks to the success of the business, we can_____a holiday this year.

A. make 　　　 B. afford C. adopt　 D. appreciate

[解析]选B。考查动词词义辨析。can afford付得起钱，负担得起; adopt采纳，收养; appreciate欣赏，感激。根据句意，B项合适。

1. Victor apologized for____to inform me of the change in the plan.

A. his being not able　　　　　　 B. his not being able

C. him not to be able　　　　　　 D. him to be not able

[解析]选B。考查动名词的复合结构。根据句型结构，置于介词for之后的应该是能作宾语的结构，而这一结构中既有be able, 又有逻辑主语“他”，因此需要使用动名词的复合结构，而动名词的否定式需将not置于动名词之前，即：his not being able。

8. His wife manages to make (make) both ends meet with his small salary.

7. I suggest you doing (do) some exercise every day to lose weight.

6. I’m expecting to have (have) such a good chance to improve my oral English.

5. He was late but gave me a reasonable (reason) explanation.

4. We can’t make sure of the trains’ arrival on time in foggy (fog) weather.

3. These pancakes made by my mother are really tasty (taste).