39．A. possible            B. surprised           C. nervous             D. mentioned

38．A. out                   B. at                            C. through             D. after

37．A. signs                 B. bridges              C. towers               D. telescopes

36．A. translate            B. suppose             C. prevent             D. continue

35．A. stone                B. coin                  C. note                  D. book

33．The streets _____ many times every day.

   A. clean                  B. cleans               C. cleaned             D. are cleaned

32．Could you tell me _____ tomorrow?

   A. when will the party begin          B. when the party will begin

   C. when would the party begin              D. when the party would begin

31．Spring is coming. There _____ flowers everywhere.

   A. have                   B. has                   C. are                    D. is

30．A moment, please. I have _____ important to say.

   A. something           B. anything            C. nothing             D. everything