题目内容
【题目】
A.twice a yearB.once a year
C.twice a half yearD.once a half year
【答案】C
【解析】
【原文】
W: Where are you leaving for, Tom?
M: I'm leaving for Suzhou.
W : Why?
M: I'm going to see my grandparents. I usually go to see them twice a half year.
Q: How often does Tom go to see his grandparents? (C)
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