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

Having a trip abroad is certainly good for the old couple, but it remains _____whether they will enjoy it.
A、to see
B、to be seen
C、seeing
D、seen
【正确答案】:B
【题目解析】:remain 是一个不及物动词,排除A;it remains to be seen 表示 尚待分晓;
句意:对于这对夫妻来说,能去国外旅游当然不错,但他们能否感到享受还有待观察。 因此答案选B