________ is no good always complaining about life．At least, we are living．

________ is no good always complaining about life．At least, we are living．

A.It

B.There

C.This

D.That

答案及解析： A

解析：

这句话的实际主语是always complaining about life，故选A，用it做形式主语，总是抱怨生活没有好处。