—What’s the best way to reach you if I have a question during the day?

—I'm glad you ________. It’s best if you send me an email.

A．ask

B．had asked

C．asked

D．were asking

下列各项中不属于国家行政机关的是( )。

A．市消费者协会

B．街道办事处

C．北京市税务局

D．乡人民政府