Mr.Black and his family have______(come) back from the U.S.
题目
Mr.Black and his family have______(come) back from the U.S.
答案
Mr.Black and his family have (come) back from the U.S.
现在完成时的结构：have /has +动词的过去分词,COME的过去分词也是 come
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举一反三
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