—Are Mr. and Mrs. Wang living alone in the house? —Yes, altough they have three sons,______of them l
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题目简介
—Are Mr. and Mrs. Wang living alone in the house? —Yes, altough they have three sons,______of them l
题目详情
—Yes, altough they have three sons, ______ of them live with their parents.
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B. both
C. all
D. none
答案