题目内容
The students _______ busily when Miss Brown went to get a book she _______ in the office.
A. had written, left B. were writing, has left
C. had written, had left D. were writing, had left
D
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题目内容
The students _______ busily when Miss Brown went to get a book she _______ in the office.
A. had written, left B. were writing, has left
C. had written, had left D. were writing, had left
D