摘要： 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 背景动作原则: 在过去发生两个动作.一个可延续性动作.一个瞬间动作.可延续性动作用过去进行时做为本件事情发生的背景.一个是瞬间动作用一般过去时 I was reading when someone knocked at the door.
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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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