Which of the followinf is right?

问题描述:

Which of the followinf is right?
A、Why do i always have a cold ↗
B、Because you don't have enough exercise.↗
C、How often do you excise.↘
D、Three times a week.↗

只有C 是对的
方法:
特殊疑问句,陈述句读降调↘;
一般疑问句读升调↗
.