how ofen do you go to the library ---( )A、Every few days B、Every a few days 选哪个?

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how ofen do you go to the library ---( )
A、Every few days B、Every a few days 选哪个?

选A,因为every 和a few 搭配,表示"每多少"时,a 省略,用every few days,这是英语中的固定搭配,其实没多少道理,记住就行了!