Question

—          does he have music lessons?     —Twice a week.

A．How long

B．How far

C．How often

D．How much

Answer 1

C

试题分析：句意：他多久学一次音乐？一周两次。A多久，问时间B多远，问距离C多久一次，问频率D多少，问数量；多少钱，问价钱。