_________have you been to the History Museum? -------Only onceA.how often B.how many times
问题描述：
_________have you been to the History Museum? -------Only once
A.how often B.how many times
答
答案：B
解释：how often 多久一次，how many times 表示“几次”。
祝你学习进步，更上一层楼！请记得采纳，谢谢！(*^__^*)
答
答案是只有一次Only once 问的肯定是 去了多少次 how many times 选B
答
B.how many times---------几次
答
B A是问频率，B是问去过的次数