susan found (it) not easy to answer all these questions
问题描述:
susan found (it) not easy to answer all these questions
found 为什么啊
these questions 应该用them
a that
b it
c them
d this
答
Susan found (it) not easy to answer all these questions.Susan发现要回答所有的问题很困难.find it +形容词+to do,发现做某事怎样.it并不是指questions,它只是个形式上的宾语,代替的是后面的不定式to answer......