4.A :____ do you use paper towels?B:Often .A.How soon B.How often C.How long
问题描述：
4.A :____ do you use paper towels?B:Often .A.How soon B.How often C.How long
答
B,表频率的都用How ofen
答
B How often 提问频率，多久一次
答
选B
有不明白的地方再问哟,祝你学习进步,更上一层楼! (*^__^*)