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
21.-----------I saw Jane and her boyfriend in the park at eight yesterday evening.
-----------Impossible. She ________TV with me at my home then.
A. watched B. had watched C. would watch D. was watching
22. A new _________bus service to Tianjin Airport started to operate two months ago.
A. normal B. usual C. regular D. common
