第一节 单项填空(共15小题；每小题1分，共15分)
从每题所给的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。
16. — See light in the sky?
— Yes, it’s moving fast. It must be plane.
A. a; the B. the; 不填 C. the; a D. 不填；a
17. — May I remind you that a Mr. Wang is waiting outside, sir?
¾ Oh, that’s right. I about it.
A. forget B. forgot
C. had forgotten D. have forgotten
