The secretary worked late into the night, ______ a long speech for the president

游客2023-09-24 51

问题 The secretary worked late into the night, ______ a long speech for the president.

选项 A、to prepare
B、preparing
C、prepared
D、was preparing

答案 B

解析此句考查非谓语动词的用法。此处没有连词，且用逗号隔开，只能用分词短语作状语。

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