第一节 单项填空（共15小题；每小题1分，满分15分）
从A、B、C、D、四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
21.—Now that you like the garden so much, why not buy it?
—Well, I can't afford______________ garden.
A. such big a B. that big a C. a big that D. so a big
22. Are the two glasses believed___________ by Tom?
A. broken B. to be broken C. to break D. to have been broken
