Question

---__________does your friend go roller skating? ---About once a week. A．When B．How often .

---__________does your friend go roller skating? ---About once a week. A．When B．How often C．How long D．How much

Answer 1

B

试题分析：通过About once a week.“大约一周一次”可知，所选疑问词应该是表示频率的。When是“什么时候”，how long是“多长时间”，how much是“多少”或多少钱，how often“多久一次”提问频率。所以本题选B. 点评：应该根据答语选择疑问词，还要注意区分这几个特殊疑问词的用法。