Having a trip abroad is certainly good for the old couple,

来源：百度知道 编辑：UC知道 时间：2024/09/24 04:34:53
Having a trip abroad is certainly good for the old couple, but it remains____ whether they will enjoy it. (NMET2002)
A.to see B. to be seen
C. seeing D. seen
为什么选B？

B选项是将来时的被动，说明出国旅游对于老夫妇是否有利这一点需要等他们旅游完才能知道，这件事还没发生。

金山词霸2009解释：：

习惯用语
remain to be seen
used to express the notion that something is not yet known or certain
尚待见分晓
she has broken her leg, but it remains to be seen how badly.
她把腿摔断了，但有多严重还有待了解。