【题目】( )--- What are you doing, mum?
---I am（ ）picture.
A. look B. looking C. look at D. looking at
【答案】D
【解析】
略
【题目】( )--- What are you doing, mum?
---I am（ ）picture.
A. look B. looking C. look at D. looking at
【答案】D
【解析】
略
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