his father is on__business every___few weeks,为什么用/,/
问题描述：
his father is on__business every___few weeks,为什么用/,/
答
on business 是出差,every few weeks 是每隔几周.
his father is on__business every___few weeks,为什么用/,/
on business 是出差,every few weeks 是每隔几周.