题目内容
---You look very healthy. ________do you exercise?
-----I exercise three times a week.
| A．How often | B．How many | C．How much | D．How soon |
A
解析试题分析：How often多久一次；How many多少个；How much多少，提问不可数名词；How soon多久。感觉下文，我每周联系三次。可知上文问的是，你看起来很健康，你多久锻炼一次？故选A。
考点：考查疑问词
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