1. He turned off the light and locked the door, believe nobody was in the room. A. 错误 B. 正确 ...

16. We ________ the work on time without your help. A. hadn't had finished B. didn't have finished C. couldn't have finished D. can't have finished ...

4. Window screens are ________ in keeping out mosquitoes and thus very popular in summers. A. affected B. infected C. effective D. infective ...

8. Prices vary with the seasons. A. 错误 B. 正确 ...

3. Her voice was imbued with an unusual seriousness. A. 错误 B. 正确 ...

17. In order to make his parentless nephew feel at home, he _______ one of the rooms into a bedroom for the boy to live in. A. designed B. decorated C. altered D. organized ...

10. It was so noisy in the classroom that the teacher couldn't make herself _________. A. heard B. hearing C. to hear D. hear ...

5. They use television advertising as a ________ for stimulating demand; apparently they have succeeded as the sales revenue has increased dramatically. A. device B. path C. symbol D. name ...

10. They liked to do one thing at one time and something else at another time or at another way. A. 错误 B. 正确 ...

5. This plant needs watering twice a week. A. 错误 B. 正确 ...