-Did he come back early last night?-- Yes. It was not yet eight o’clock he arrived

问题补充：

---- Did he come back early last night?

---- Yes. It was not yet eight o’clock he arrived home.

A. when

B. that

C. before

D. until

答案：

(答案→)A. when

B. that

C. before

D. until

解析：考察状语从句。When引导的是时间状语从句，根据句意：—昨天晚上他回家很早吗？—是的！当他到家的时候，还没有到8点。