佛山一中2013届高一上学期期中考试(英语)
从16-30各题所给的A、B、C、D四个选项中,选出最佳答案,并将答题卡上相应题目的答案标号涂黑。
16. The number of foreign students attending Chinese universities ______ rising steadily since 1990.
A. have beenB. are C. has beenD. is
17. I was out of town at that time, so I don’t know exactly how it ______.
A. was happeningB. happenedC. has happenedD. happens