He found it impossible______ in a noisy room.A.study B.to study C.studing D.to studing
问题描述：
He found it impossible______ in a noisy room.A.study B.to study C.studing D.to studing
答
B.to study 为正确选项.
这是find it+形容词+to do sth 句型,发现做某事怎么样.