题目内容
A．movingB．happeningC．talkingD．doing
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Mr. Johnson has been working industriously in the company for years, which led to______.
Duncan got her best early acceptance in______.
Newton proved that it is______that the moon is pulled out of a straight path and kept in orbit (轨道).
We usually walk______the river bank, but today I feel tired and won't walk______far.
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