问题
选择题
All of us found ______ difficult to work out the maths problem.
A．what
B．that
C．which
D．it
答案
答案：D
考查代词。本题用it作形式宾语，真正的宾语为不定式to work out the maths problem，故选D。
搜题请搜索小程序“爱下问搜题”
All of us found ______ difficult to work out the maths problem.
A．what
B．that
C．which
D．it
答案：D
考查代词。本题用it作形式宾语，真正的宾语为不定式to work out the maths problem，故选D。