____ is no reason for discharging her.
C
【句意】只是迟到了几分钟，并不能成为解雇她的理由。
【难点】A)，B)均不能充当句子主语，C)Thefact后跟that引出的同位语从句，D)Being是动名词。但D)中的名词being没有行为主体，未说明谁迟到，所以排除。
You ’d better sing. It doesn’t ______ whether you can sing well or not.
—Do you mind__________ here?
—________.
The ____of AIDS has led to an expansion in research seeking a cure.
Theoldmanlivesinavillage_______,butheneverfeels________.