问题
选择题
It remains ______ whether Liu Xiang will take part in the next Olympics.
A.to see
B.to be seen
C.seeing
D.to have seen
答案
答案:B
考查固定句型。句意“刘翔是否会参加下一届奥运会还有待观察。”It remains to be seen...“......还有待观察”。故选B。