问题描述:
用关系代词将下列句子连成复合句:
the old man is a professor.he teaches chemistry in a college.
the man waved to us.the man was my uncle.
these are the presents.i bought them for my parents.
the old man is a professor.he teaches chemistry in a college.
the man waved to us.the man was my uncle.
these are the presents.i bought them for my parents.
问题解答:
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