问题
选择题
They are teachers and don’t realize _______ to start and run a company.
A．what takes it
B．what they take
C．what takes them
D．what it takes
答案
D
宾语从句中的语序按正常顺序排列应该是it takes what to start and run a company。it在宾语从句中充当形式主语。to start and run...是真正的主语，what在从句中作宾语。
