题目内容
从所给的四个选项中选择最佳答案
The secretary worked late into the night, _____ a long speech for the president.
[ ]
A.was preparing B.preparing
C.to prepare D.prepared
答案:B
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题目内容
从所给的四个选项中选择最佳答案
The secretary worked late into the night, _____ a long speech for the president.
[ ]
A.was preparing B.preparing
C.to prepare D.prepared