题干

—It is a long time ______ I saw you last.
—Yes, and what a pity it is since it will be a long time ______ we see each other again.
A.before; sinceB.when; when
C.since; beforeD.when; then
上一题 下一题 0.4难度 单项选择 更新时间:2016-02-19 04:51:13

答案(点此获取答案解析)