Question

—How often do the students play sports? A．Twice a day B．Since last night C．For two hours

—How often do the students play sports? A．Twice a day B．Since last night C．For two hours D．A month ago

Answer 1

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。