题目内容
---Where is your father?
---He is helping David ______ a shelf above the bed.
A. put in B. put on C. put up D. put out
C 【解析】 试题句意:--你的父亲在哪儿?--他正在帮助大卫在床上建造一个架子,A. put in放进;B. put on穿上;C. put up建造;D. put out放置。结合语境,故选C。
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