一、单项选择 (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。
1.—Do you know ▲ man in blue?
—Yes, he is a professor of Jiangsu University.
A. the B. a C. an D. 不填
2. ▲ your help, we couldn’t finish the work ▲ such a rainy day.
A. With; in B. Without; in C. Without; on D. With; in
3. This is the ▲ time during ▲ days that he has made the same mistakes.
A. second; third B. two; three C. two; third D. second; three
