摘要：Having a trip abroad is good for the old couple, but it remains whether they will enjoy it. A. to see B. to be seen C. seeing D. seen
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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?
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—Having a trip abroad is certainly good for the old couple
— it remains to be seen whether they will feel strong enough
A. So B. And C. But D. For
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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