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

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

Having a trip abroad iscertainly good for the old couple, but it remains_____ whether they will enjoyit.

A. to see  B. to be seen

C. seeing  D. seen

 

试题答案

答案:B

解析:

不定式的被动式作表语。