Did you return the book you borrowed from Tom?Yes I gave it to him I saw him.A.

问题补充：

--- Did you return the book you borrowed from Tom?

--- Yes, I gave it to him I saw him.

A. for the moment

B. the moment

C. for a moment

D. at the moment

答案：

A. for the moment

(答案→)B. the moment

C. for a moment

D. at the moment

解析：考察名词性短语作连词用法。本句中需要的是一个连词来连接时间状语从句I saw him。ACD三项都是介词短语，可以在句中作时间状语，但是不能充当连词连接从句。The moment“一…就…”可以引导时间状语从句。句意：—你把你借Tom的书还了回来吗？—是的。我一看见他，就给他了。根据句意说明B正确。