问题补充:
—When did you come back last night?
—It was not until 11 oclock the party ended.
A. that
B. when
C. where
D. how
答案:
A. that
B. when
C. where
D. how
解析:答案:B考查特殊句式。when引导定语从句,省略了强调句的后面成分,完整的句子为:It was not until 11 oclock when the party ended that I came back.