-____is she?
-She is my sister, Kate.[ ]
A. Who
B. What
C. How
D. What's
答案：A
纳税人恢复生产经营前，应当办理（）。
A.开业登记
B.注册登记
C.复业登记
D.注销登记
---__________does your friend go roller skating?
---About once a week.
A．When
B．How often
C．How long
D．How much
