Question

--- How often do you go fishing?

---                 .

A. Twice a week    B. Twice    C. A week    D. Two times

Answer

A

【解析】句意：---你多久去钓鱼一次？----一周两次。A. Twice a week一周两次；B. Twice两次；C. A week一周；D. Two times两次。How often多久一次，多长时间一次，询问频度的，结合句意和语境可知选A。