Question

—__________ does Tim go to a movie?   —Twice a month.
A. How long         B. How soon         C. How often

Answer 1

C

疑問詞辨析。How long多長；How soon多久；How often多久一次。根據答語內容—Twice a month，一月兩次.可知上文提問頻度，故選C。