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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

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

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

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

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