题目内容

______hours do you exercise every week ?  Nine hours.
A．How manyB．How oftenC．How muchD．How long
A

试题分析：你每周做几个小时的运动？九小时。A多少，后接可数名词复数，例如本题中的hours;B多久一次，表频率，C多少，后接不可数名词，D多长。结合题意，故选A。
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