从A、B、C、D四个选项中，选出可以填人空白处的最佳选项，并在答题卡上将该项涂黑。
21. -- Tommy, we're in great need of your help here and…
-- Look,___________. I'm not coming and that's that.
A. I'd love to B. that's nice of you C. it doesn't matter D. just forget it
22. Now my idea of a university is still _________ it was ten years ago, a center of cultural life and a resource for the entire community.
A. what B. whether C. that D. which
23. Believe it or not, IMVU is going to _________ two years old next month. We started April Fool's Day, 2005.
