when he was ___,he went down to the small river behind the factory and tries to catch it .
when he was ___,he went down to the small river behind the factory and tries to catch it .
A free B busy C ill D right
A free B busy C ill D right
英语人气：733 ℃时间：2020-01-17 21:54:57
优质解答
A free,为什么呢？当他自由空闲的时候。
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