How often ___ your teeth examined?

单选题

How often ___ your teeth examined?

答案解析

单选题

How often do the trains come? 表达的意思是___.

答案解析

判断题

您想充多少钱?How often do you want?( )

答案解析

判断题

多长时间一趟车?How often do the trains come?( )

答案解析

单选题

---How would you like your coffee? ---_______,please.

答案解析