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18、When she came out, Mary looked a bit tired because she     the house.

A. cleaned   B. was cleaning    C. had cleaned      D. had been cleaning

18、D

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科目：高中英語 來源： 題型：

When she came out, Mary looked a bit tired because she _____the house.

A. cleaned  B. was  C. had cleaned  D.had been cleaning

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科目：高中英語 來源： 題型：

.When she came out, Mary looked a bit tired because she _____the house.

A. cleaned          B. was           C. had cleaned        D.had been cleaning

查看答案和解析>>

科目：高中英語 來源： 題型：

When she came out, Mary looked a bit tired because she ____ the house.

  A. cleaned                 B. was cleaning             C. had cleaned                     D. had been cleaning

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科目：高中英語 來源： 題型：

When she came out, Mary looked a bit tired because she     the house.

A. cleaned   B. was cleaning    C. had cleaned      D. had been cleaning

查看答案和解析>>

科目：高中英語 來源：2010屆高考二輪復(fù)習(xí)：單項(xiàng)選擇典型試題分類精講（二） 題型：單項(xiàng)填空

.When she came out, Mary looked a bit tired because she _____the house.

A．cleaned

B．was

C．had cleaned

D．had been cleaning

 

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