题目内容
选择并抄写单词
Jim went shopping with his mother after he finished ________(do; doing)his homework．
答案：doing
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开心蛙状元测试卷系列答案题目内容
选择并抄写单词
Jim went shopping with his mother after he finished ________(do; doing)his homework．
开心蛙状元测试卷系列答案