-Did Jack come back early last night?
-Yes.It was not yet eight o'clock_____he arrived home.
A.before B.when C.that D.until
答：选B
解析：句意为：-Jack昨晚回来得很早吗?-是啊,他到家时还不到8点.
因此 when 是正确答案.此题易误选为 until.
含 until 的句子应是应该是-No,he didn't arrive home until eight o'clock.他直到八点才到家.
该类题的关键是明确不同连接词的意义与用法,结合具体语境,作出正确选择.
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【阿美莉猫·来自英语牛人团】