We have an English class (every month).(就括号部分提问) ___ ___ do you have English classes?
问题描述：
We have an English class (every month).(就括号部分提问) ___ ___ do you have English classes?
答
How often
答
how often. 对频率进行提问要用how often.
every month 是“每个月”是一种频率。
答
答案： How often
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