Question

【题目】—________do you read English books?
—Twice a day.
A.How many
B.How often
C.How long

Answer 1

【答案】B
【解析】句意：—你多久读一次英语书？—一天两次。根据Twice a day.可知此处对频率提问，故用疑问词how often。故选B。