单项选择题

______you were busy, I wouldn't have bothered you with my questions.

A. If I realized
B. Had I realized
C. I realized that
D. As I realized
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单项选择题
I hate people who ______ the end of a film that you haven't seen before.
A. rewrite
B. reveal
C. revise
D. reverse
单项选择题
We regret to inform you that the oil-stoves you ordered last month are______.
A. out of stock
B. out of work
C. out of reach
D. out of practice
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