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夏小麦521
I'm doing my homework now.现在进行时态
熊熊去哪儿
doing homework ..
HY逆天的飞翔
正在写作业: is/am/are doing homework
小笨猪seven
I'm do homework now.
钮咕噜嘟嘟
正在干某事 用be doing i am doing my homework
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