— does your school have the parents’ meeting?
— Twice a year.
A. How often
B. How long
C. How many
D. How much
网友回答
(答案→)A. How often
B. How long
C. How many
D. How much
解析:A. How often多久一次,表频率 B. How long多长时间,长度 C. How many多少,修饰可数名词的复数 D. How much多少,修饰不可数名词;句意:你的学校多久开一次家长会。一年两次。故选A