摘要：The students busily when Miss Brown went to get a book she had left in the office. A. wrote B. are writing C. had written; D. were writing
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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
查看习题详情和答案>>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
查看习题详情和答案>>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
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