Having a trip abroad is certainly good for the old couple ,but it remains ____ .

分类: 作业答案 • 2022-01-09 18:03:39

问题描述：

Having a trip abroad is certainly good for the old couple ,but it remains ____ .
A.to see B.to be seen C.seeing D.seen
求详解.

答

B
这是一个常用语：it remains to be seen 什么还有待观察.
remain表示仍、依旧.相当于be still .