问题补充：
(·北京朝阳模拟)Jim came back early last night. It was not yet eight oclock he got home.
A. before
B. that
C. when
D. until
答案：
A. before
B. that
C. when
D. until
解析：C句意：Jim昨晚回来得早。还不到八点他就到家了。when有“当……的时候”的含义，引导时间状语从句，故选C项。before意为“在……之前”；that是强调句的结构词，但是此句不符合强调句结构；until意为“直到……”，均不符合句意。
