. The secretary worked late into the night, a long speech for the president.A. to prepare

发布时间:2020-08-16 07:17:38


. The secretary worked late into the night,                 a long speech for the president.
A. to prepare
B. preparing
C. prepared
D. was preparing

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A. to prepare
(答案→)B. preparing
C. prepared
D. was preparing
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