题目内容
Mary looked at the picture, wondering where she ______ it before.
[ ]
A. saw
B. has seen
C. sees
D. had seen
B. has seen
C. sees
D. had seen
D
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.When she came out, Mary looked a bit tired because she _____the house.
|
A.cleaned |
B.was |
C.had cleaned |
D.had been cleaning |