35．The writer and professor ______to ______abroad for two years．But no one knows which country he studied in．

　　 A．are said; be studying　　　　　　　　　 　 B．is said; have studied

　　 C．are said; to study　　　　　　　　　　　 　 D．is said; have been studying

34．Nothing else _____more important than water in the place like a desert．

　　 A．we can’t find　　 　 B．can’t we find　　 　 C．can we find　　 　　　 D．we can find

33．______all you had done to him, he still treated you so kindly．

　　 A．In spite　　　 　　　 B．No matter　　　 　　 C．Despite　　　　 　　 D．Although

32．____the problem of land erosion getting more serious, the government is searching for a way to deal with it．

　　 A．As　　　　　　 　 B．With　　　　　　 C．When　　　　 　　　　 D．If

31．As far as we know, traveling in space has been made ______with the development of science and technology．

　　 A．it is possible　　 　 B．it possible　　 　　　 C．possible　　　 　　　　 D．impossible

30．A: Professor Hopkins didn’t turn up last night, did he?

　 B: No, we _____for him．A whole night was wasted．

　　 A．needn’t have to wait　　　　　　　　　 　 B．couldn’t have waited

　　 C．needn’t have waited　　　　　　　　　 　 D．didn’t need to wait

29．Don’t disturb me．I ______the letters all morning and ______ten so far．

　　 A．write; wrote　　　　　　　　　　　　　 B．am writing; have written

　　 C．was writing; wrote　　　　　　　　　　　 D．have been writing; have written

28．Li Ping works hard at his lessons, he didn’t pass the exams last time, ______．

　　 A．though　　　　 　　 B．yet　　　　　　 　 C．however　　　　 　 D．although