中文谷---Itookcareofmygrandfatherinhospital. ---Isthat
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问题详情：
--- I took care of my grandfather in hospital.
--- Is that ______ you had a few days off?
A. what B. when C. why D. where
【回答】
C
知识点：相似 相近词比较
题型：选择题
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Isthat
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