从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题纸上将该项涂黑。
21. —How did you find your visit to the exhibition, John?
—______
A. By taking a No. 3 bus. B. Oh, wonderful, indeed.
C. I went there alone. D. A classmate of mine showed me the way.
22. There is ______ small temple on the island, which can only be reached by ______ water.
A. a; 不填 B. a; the C. the; the D. the; 不填
23. All the other boys have geography books and they will be ahead of me if I don’t get ______.
A. it B. the one C. one D. that
24. —How’s your tour around the North Lake? Is it beautiful?
—It _______ be, but it is now heavily polluted.
A. will B. should C. would D. must
25 All these activities can serve as a platform ______ you might find the one you love.
A. which B. that C. when
