问题
选择题
It is _______ difficult for us _______ climb up the mountain.[ ]
A. very, can' t
B. too, not
C. too, to
D. very, to
答案
答案：C
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It is _______ difficult for us _______ climb up the mountain.[ ]
A. very, can' t
B. too, not
C. too, to
D. very, to
答案：C