第一节 ： 单项选择（共20小题，每小题0.5分；满分10分）
请认真阅读下面各题，从题中所给的A. B. C.D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。
21. The lady insisted that the young man ___her wallet and insisted on ___ to the police station at once.
A. has stolen, be sent B. should steal, sending him
C. had stolen, his being sent D. should steal, sending
22.Jumping out of _______ plane at ten thousand feet is quite _____ exciting experience.
A. /; the B. /; an C. a; an D. the; the
