The secretary worked late into the night, (prepare) ______ a long speech for the

游客2023-09-26  28

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

选项

答案 preparing

解析 此处空格前面没有连词,又因为与前面worked的动作同时发生,且与主语The secretary为主动关系,作为伴随状语,应该用现在分词。
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