根据下列句子及所给汉语注释，在答卷纸上写出各单词的正确形式。（每空只写一词）

1.That noise is driving me _____ （疯狂）．

2.He was still _____ （献身） to the study of chemistry．

3.The concert will be broadcast _____ （现场直播）．

4.Researchers in this field have made some important new _____ （发现）．

5.You can ring my _____ （秘书） to make an appointment．

6.The children were lying flat on their _____ （肚子）．

7.There are seven _____ （大陆，大洲） in the world．

8.The disease spread _____ （遍及） the country．

9.They carried most of their _____ （设备） on their backs．

10.I ______ （折叠） the letter and then put it into the envelope．

11.She _____ （耳语） the word in my ear．

12.The country’s _____ （官方的） language is Spanish．

13.He has had few _____ （场合, 时机） to speak French．

14.She could not make a clear _____ （解释）．

15.The traffic lights are _____ （控制） by a central computer．

16.This machine has a _____ （世界的， 通用的） use in the home．

17.Would you mind not _____ （打断） all the time?

18.The _____ （沿海的） region has a pleasant climate．

19.Many companies are _____ （遭受） from a shortage of skilled staff．

20.The building was completely _____ （摧毁） by fire．