题目内容

—How often do the students play sports?
A．Twice a dayB．Since last nightC．For two hoursD．A month ago
A
考查疑问副词短语的答语。上文用how often（多久一次）提问，下文需是表频度的答语。故选A。twice a day“每天两次”。【易错分析】B项和C项常用于现在完成时，D项常用于一般过去时。
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