35. _______ Tom, we wouldn’t have been late for the last bus.

A. If we didn’t wait for　　　　　　　　

B. If we haven’t waited for

C. we hadn’t waited for　　　　　　　　

D. Had we not waited for

34. The twin brothers stand under the tree, ______ and say nothing.

A. puzzled　　　　　　　　　　　　　　 B. puzzling　　　　　　

C. being puzzling　　　　　　　　　 D. being puzzled

33. ________ that I was puzzled.

A. So difficult a question did he ask me

B. Such difficult a question did he ask me

C. Such a difficult question he asked me

D. He asked me a so difficult question

32. The factory, including its machines and buildings, ______ burnt to ashes during the fire.

A. is　　　　　　　　　　　　　　　　　　 B. are　　　　　　　　　　

C. was　　　　　　　　　　　　　　　　　 D. were

31. – Are you cleaning my room?

– I can’t help _____. I can’t bear seeing people’s room in a mess!

A. it　　　　 　　　　　　　　　　　　　　 B. this　　　　　　　　　

C. anything　　　　　　　　　　　　　 D. so

30. He thought that painting copied by a modern artist was ______ great value and bought it ____ over a thousand dollars.

A. at; for　　　　　　　　　　　　　　　 B. of; for　　　　　　　

C. of; at　　　　　　　　　　　　　　　　 D. for; by