— have you been to Taiwan?
— Only once.
A. How often
B. How many times
C. How long
D. How soon
网友回答
A. How often
(答案→)B. How many times
C. How long
D. How soon
解析：A. How often多久一次，表示频率；B. How many times 多少次，常和完成时态连用 ；C. How long 多长时间或是距离；D.How soon 多久，一般用于将来时态中；故选B.句意：你去过几次台湾呢？仅有一次。