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--Hi, Tracy, you look tired.
--I am tired. I________ the living-room all day.
A．paintedB．have been painting
C．had paintedD．have painted
B
本題是對動詞時態(tài)的考查。解此題的關(guān)鍵是抓住答語中的aⅡday，而D項只表示動作已經(jīng)完成，沒有強調(diào)一直做。
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