问题描述：
I was thinking about something else
-What do you think of my suggestion?
-Sorry.What's that?I about something else
A,thought B,was thinking C,am thinking D,had thought
请说明原因
-What do you think of my suggestion?
-Sorry.What's that?I about something else
A,thought B,was thinking C,am thinking D,had thought
请说明原因
问题解答：
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