选c
有them都不对,这是一个非限定性定于从句
如果用them的话前面必须加and
He has four sons (,)and none of them is a pianist as he is.或He has four sons.None of them is a pianist as he is.
neither是二者选一,所以不对
选c
有them都不对,这是一个非限定性定于从句
如果用them的话前面必须加and
He has four sons (,)and none of them is a pianist as he is.或He has four sons.None of them is a pianist as he is.
neither是二者选一,所以不对