5. The computer was used in teaching. As a result, not only　　　 , but students became more interested in the lessons.

A. saved was teachers’energy

B. was teachers’energy saved

C. teachers’energy was saved

D. was saved teachers’energy

4. Knowing how long the test would　　　 , the students who had finished　　　 　back and waited until the end of the exam.

A. take place；sat　　　　　　　　 B. happen；set

C. last；settled　　　　　　　　　 D. go on；to settle

3. The manager was very angry, for he had sent his business partner two thousand machines yesterday, half of　　　 unqualified.

A. them　　　　 B. what　　　　　 C. which　　　 D. whom

2. I couldn’t get through; someone　　　 the telephone.

A. may be using　　　　　　　　　 B. may have used

C. must have been using　　　　　 D. must be using

从A、B、C和D四个选项中，选出可以填入空白处的最佳选项。

1. Hospital staff burst into cheers after doctors completed a 20?hour operation to have one-year-old twins 　　　　at the head.

A. isolated　　　 B. separated　　 C. divided　　 D. removed

5. The firm’s directors quickly approved the new idea.

4. We should adopt the consumers’suggestion.

3. He is simply not up to the job.

2. Politicians should beware of the abuse of power.