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1. It is hard for people to move forward with a strong wind ___________hard.
A. blown B. blowing C. to blow
【考点】
动名词;
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A. Leaming B. Learnt C. Learned D. Learn
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—That's great! But my parents are too busy ________ operations to spare me any time.

A. to do B. done C. doing D. do
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