问题描述：
Uncle Charlie_the old house into a beautiful sitting-room and invited me to his home.A is transform
Uncle Charlie_the old house into a beautiful sitting-room and invited me to his home.
A is transforming B has transformed C transformed D had transformed
答案是C为什么不能选B
Uncle Charlie_the old house into a beautiful sitting-room and invited me to his home.
A is transforming B has transformed C transformed D had transformed
答案是C为什么不能选B
问题解答：
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