单选题
1.[2005.4]Some people who are very intelligent and successful in their fields find________difficult to succeed in language learning.
A.which
B.how
C.that
D.it
正确答案:D
答案解析:本题考查it做形式宾语。句意为:一些在自己领域才智过人并且非常成功的人发现,在语言学习上取得成功是很困难的。