问题 选择题
—When did you come back last night?
—It was not until 11 o'clock ________ the party ended.
A.thatB.when
C.whereD.how
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 o'clock when the party ended that I came back.

问答题
单项选择题