题目内容
8．-___________ do you usually play Yoga in your free time？-Twice a week．（ ）
| A． | How long | B． | How often | C． | How soon | D． | How much |
分析 -你在空闲时间多久练一次瑜伽？
-一周两次．
解答 答案：B
how long多长时间（对时间的长度进行提问）．how often多久一次（对频率词进行提问）；how soon多久（常对in+段时间进行提问）；how much（对不可数名词数量提问）．根据答语是频率，应该用how often提问，故选B．
点评 本题考查疑问词组的辨析，在熟知各个词组意思的基础上与句子的语境相结合，从而得出正确的答案．
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