4. It seems that becoming rich is their only goal in their life.

Becoming rich seems to be their only goal in their life.

3. He tried to work hard at his lessons so that he could pass the test.

He tried to work hard at his lessons in order to pass the test.

2. The film began at 2: 00 p. m. and ended at 4: 30 p. m. .

The film lasted two and a half hours.

1. The problem is too difficult for me to work out.

The problem isn’t easy enough for me to work out.

10. We should always keep____in mind____friendship should be based on equality.

A. it; what　　　　　　 B. it; which

C. it; that　　　　 D. that; that

[解析]选C。考查句子结构。it作形式宾语，that引导真正的宾语从句。

9. A new material of which water pipes are made has already_____steel or iron in industry.

A. controlled　　　　　 B. rebuilt　　　　　　 C. placed　　　　　 D. replaced

[解析]选D。考查动词词义辨析。replace代替，取代；control控制；rebuild重建；place放，搁。

8. In the morning there wasn’t any_____of rain, so we didn’t take an umbrella with us.

A. signal　　　　　　 B. sign　　　　　　 C. mark　　　　　　 D. notice

[解析]选B。考查名词词义辨析。句意：早上一点下雨的迹象也没有，因此我们没有带伞。signal信号；sign迹象，象征；mark符号，标记；notice注意。

7. You should pay in_____, not by credit card.

A. cash　　　　　 B. note　　　　　　　 C. bill　　　　　　 D. coins

[解析]选A。考查词组搭配。in cash用现金。

6. I couldn’t be present myself, but I sent my____to the meeting.

A. agent　　　　 　　　　　　　　　　　　　B. represent

C. representative　　　　　　　　　 D. representation

[解析]选C。考查词义辨析。句意为：我不能亲自出席会议，但我派代表去了。representative代表，代理人；agent代理商；represent v. 代表，描述；representation n. 描述，代表，表示总称，不指某个具体的人。

5. Tom likes playing football and Mary is____playing table tennis.

A. keen on　　　　　 B. keen in　　　　　 C. fond on　　　　　 D. fond to

[解析]选A。考查短语搭配。be keen on喜爱，对……着迷。fond用在be fond of结构中。