---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

解析試題分析：句意：你看起來(lái)很健康。你多久鍛煉一次？我每周鍛煉三次。How often多久一次，對(duì)動(dòng)作發(fā)生頻率提問(wèn)；How many多少，對(duì)可數(shù)名詞的量提問(wèn)； How much多少，對(duì)不可數(shù)名詞的量提問(wèn)；How soon多久以后，對(duì)短語(yǔ)“in + 一段時(shí)間”提問(wèn)。所以選A。
考點(diǎn)：考查疑問(wèn)短語(yǔ)。

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