He would appreciate ___if you could do him that favourA itB thisC whatD which

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He would appreciate ___if you could do him that favourA itB thisC whatD which
He would appreciate ___if you could do him that favour
A it
B this
C what
D which

He would appreciate ___if you could do him that favourA itB thisC whatD which
A形式宾语,大多数有it的题都选它

选A

A
it这里是指代后面的从句,if you could do him that favor

A it 在此指代do him that favour 这种情况