Question

During the last three decades, the number of people participating in physical fitness programs ___ sharply

1. A.
   was increasing
2. B.
   has increased
3. C.
   had increased
4. D.
   will be increasing

Answer 1

B
试题分析：考查动词的时态。句义：在过去的三十年里，参加体育健身项目的人的数量已经急剧的增加了。
做对本题要把握关键词During the last three decades，记住：during/in /over/for the last/past +时间段，用于现在完成时，所以B正确。
考点：考查动词的时态。