题干

---It's reported__________the new underground line has been completed.
---Yes, but it hasn't been made clear ________ it's to be opened to traffic.
A.when; when
B.that; that
C.when; that
D.that; when
上一题 下一题 0.64难度 单项选择 更新时间:2015-07-29 05:46:52

答案(点此获取答案解析)