题干

(2014·福建) no modern telecommunications, we would have to wait for weeks to get news from around the world.
A.Were there B. Had there been
B.If there are     D. If there have been
上一题 下一题 0.65难度 单项选择 更新时间:2014-06-24 06:35:22

答案(点此获取答案解析)