21. We have every reason to believe that ______ 2008 Beijing Olympic Games will be ______ success.
A. / … a B. the … / C. the … a D. a … a
22. --- She looks very happy. She ______ have passed the exam.
--- I guess so. It’s not difficult after all.
A. should B. could C. must D. might
23. At the end of the meeting, it was announced that an agreement ______.
A. has been reached B. had been reached
C. has reached D. had reached
24. --- Have you ______ some new ideas?
--- Yeah. I’ll tell you later.
A. come about B. come into C. come up with D. come out with
