17. Jean's uncle insists ____ in this hotel.
A. not staying
B. not to stay
C. that he not stay
D. staying not
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18. ---"Was the housemaster strict?" ---"Yes. He requested that we ____ television on week nights."
A. not watch
B. must not to watch
C. not be watching
D. watching not
19. The general ordered that the enemy ____ stopped.
A. is
B. be
C. was
D. to be
20. I would have come sooner but I ____ that you were waiting.
A. didn't know
B. hadn't known
C. hasn't know
D. don't known
21. If you ____ see Mr. Allen, give him my regards.
A. should
B. would
C. shall
D. will
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