单项选择题

If I ______ out of ink, I would have finished writing the paper.

A. shouldn't run
B. haven't run
C. hadn't run
D. didn't run
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单项选择题
______swim to that little island in the middle of the lake and back again
A. Dare he
B. Dare he to
C. Dares he
D. Will he dares
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