23. It was a relief to find the documents. I _____ for them
all afternoon.
(A)was looking
(B)have looked
(C)had been looking
(D)looked
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統計: A(9), B(7), C(28), D(2), E(0) #3287622
統計: A(9), B(7), C(28), D(2), E(0) #3287622