how often和how many times

问题描述:

how often和how many times
5.— _______ a year does your school have sports meetings?—Twice a year.
A.How often B.How soon C.How long D.How many times
答案说选A,但是我为什么觉得应该是D呢?A读不通啊……麻烦大家解释一些,

我知道了!如果答案是Twice,就是回答几次,那么就选D,但是答案是Twice a year,就是对频率的回答,选A.