35. ______ the ancient Egyptians built the pyramids puzzled people for centuries.

　　 A. Whether　 　 B. What　 C. How　　　　 D. Where

34. ______ anyone should want to kill her was unbelievable.

　　 A. Whether　 　 B. That　　　　　 C. What　　　　 D. If

33. Some of the doctors are paid almost ______ as the nurses.

　　 A. twice as much　　　　 B. much as twice　　　　

　　 C. as much twice　　　　 D. as twice much

32. ______ I’m well again, I can go on with my work.

　　 A. Even if　　　 　 B. As though　　 C. Ever after　 D. Now that

31. The government has to close those small factories to prevent the water of the river ______.

　　 A. polluting　　　　　　　　　 B. from polluting　　　　　

　　 C. being polluted　　　　 D. polluted

30. They had a ______ quarrel and John stormed out.

　　 A. violent　　　 　 B. cruel　 C. strong　　　　　　　 C. harmful

29. He wants to see changes in the company and I am sure he will, ______.

　　 A. on time　　 　 B. at a time　　 C. at one time　　　 D. in time

28. At last, I made up my mind to speak the truth ______of the whole class.

　　 A. in the present　 　　 B. at the present　　

　　 C. in the presence 　　　　　　 D. at the presence