If I had not been lucky enough to meet you, I really _____what I would have done.
A. don't know
B. hadn't know
C. wasn't knowing
D. wouldn't know
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Jane's pale face suggested that she was ill, and her parents suggested that she _____a medical exam.
A. has
B. have
C. will have
D. would have
Without the air to hold some of the sun's heat, the earth at night _____for us to live.
A. would be freezing cold
B. would be frozen cold
C. will befreezing cold
D. can freeze coldly
I advised that he _____to the hospital at once, but he insisted that he was feeling quite well then.
A. be sent
B. send
C. will be sent
D. was sent
Had it nit been for the doctor's careful treatment,he ______till last year.
A. couldn't live
B. couldn't have lived
C. can't live
D. could live