下列行为中不属于违反印花税法规定行为的是( )。

A．应税凭证上未贴印花税票

B．应税凭证上未贴印花税票，但有缴款书副联

C．已贴印花税票未注销

D．已贴印花的应税合同，由于合同未履行而印花揭下重用

—What's your father?

—He's a teacher. He          math at a school.   [ ]

A. teaches

B. taught

C. will teach

D. has taught