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
科目：高中英语 来源： 题型：
When she came out, Mary looked a bit tired because she _____the house.
A. cleaned B. was C. had cleaned D.had been cleaning
科目：高中英语 来源： 题型：
.When she came out, Mary looked a bit tired because she _____the house.
A. cleaned B. was C. had cleaned D.had been cleaning
科目：高中英语 来源： 题型：
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
科目：高中英语 来源： 题型：
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
科目：高中英语 来源：2010届高考二轮复习：单项选择典型试题分类精讲（二） 题型：单项填空
.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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