— ------ TV do you watch every day?— about two hours.A :How long B:How often 为什么?

题目

— ------ TV do you watch every day?— about two hours.A :How long B:How often 为什么?

答案

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.