— ------ TV do you watch every day?— about two hours.A :How long B:How often 为什么?
问题描述：
— ------ TV do you watch every day?— about two hours.A :How long B:How often 为什么?
答
选A。
How long 指“时间持续多长”，比如每天看两个小时电视。 How often 指“频率是多少”，比如每天看两次电视。
答
A How long 表示多久， How often 表示多久一次，询问频率
答
A
cause it's about 2 hrs.so it is a period. so choose how long
if we choose how often.the ans shud be every 2 hrs.