问题补充:
---Did Tom come back late last night?
---No. It was not yet 8 o’clock he arrived home.
A. before
B. when
C. that
D. until
答案:
A. before
(答案→)B. when
C. that
D. until
解析:句意:--汤姆昨天晚上回来地晚吗?—没有,他到家的时候还不到8点。这里when引导的定语从句,先行词是8 o’clock,when在定语从句中作状语,其他的连词before 和until不能引导定语从句,that在定语从句中不能做状语,故选B。