21. With the help of curriculum reform, students enjoy a variety of after-school activities, ______ up to half are aimed at strengthening their physical strength and building up their confidence.
A. to which B. of which C. from which D. in which
22. —When shall we set about doing our work?
—______ all the group members are here.
A. Until B. Since C. Unless D. Not until
23. They ___________with joy when they heard that their class won the first place in the relay race.
A. sprang up B. split up C. took up D. picked up
24. —What about the two of us going downtown ?
— ______. I hate spending time hanging around.
A. That suits me fine B. Why not
C. It depends on the weather D. Well, that’s the last thing I will do
25. ____, he talks a lot about his favorite singers after class.
A. A quiet student as he may be B. Quiet student as he may be
C. Be a quiet student as he may D. Quiet as he may be a student
26. I would have attended your wedding anniversary, but one of my former classmates ______ to visit me, which was out of my expectation.
A. had come B. came C. was coming D. has come
27. Frank insisted that he was not asleep __________ I had great difficulty in waking him up.
A. whether B. although C. for D. so
