______ his telephone number, she didn’t know how to get in touch with him.A、Havi

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问题 ______ his telephone number, she didn’t know how to get in touch with him.

选项 A、Having forgotten
B、Forgetting
C、To have forgotten
D、To forget

答案 A

解析 having forgotten是分词作状语的用法，应为“忘记电话号码”这个情况出现在先，所以使用现在分词的完成形式。

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