35. ______ a written permission, he had to write another letter to the president of the university.

A. Not giving　 　　　　　　　　　　　　　　　　　 B. Not having been given

C. Having not given　 　　　　　　　　　　　　　 D. Having not been given

34. - How come your father can read books in German? 　　

　 - Well, he ______ on a project with some German engineers for 3 years when he was young. 　

　 A. worked 　　　　　　 B. was working 　　 C. had worked 　　 　　　 D. would work

33. It was reported that 115 miners ______ in the flooded mine for eight days were pulled out alive at last.

　 A. trapped 　　　　　　 B. being trapped 　 C. were trapped 　　　　　 D. had trapped

32. - Have you heard that Jones, along with her parents, ____ to Hainan for the winter vacation?

　 - Really? No wonder I haven’t seen her these days.

　 A. has been　　　　　　 B. have been　 　　　 C. has gone　　　　　　　　　 D. have gone　

31. Not until they left school ______ how much their teachers loved them and helped them.

　 A. they realized　 　　　　　　　　　　　　　　　　 B. did they realize

C. they would realize 　　　　　　　　　　　　　 D. had they realized