——I can hardly believe my eyes. Is that you, Lucy?——Yes. It has been almost 20 years______ we were together.

题型：单选题题类：真题难易度：普通

——I can hardly believe my eyes. Is that you, Lucy?
——Yes. It has been almost 20 years______ we were together.

A、since B、before C、after D、until

举一反三

-- I'm sorry. I was having dinner with my friends _______ you were looking for me.

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