问题
选择题
—__________ does Tim go to a movie? —Twice a month.
A. How long B. How soon C. How often
答案
答案：C
疑问词辨析。How long多长；How soon多久；How often多久一次。根据答语内容—Twice a month，一月两次.可知上文提问频度，故选C。
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