你需要的：.What are the strongest days of the week?
Saturday and Sunday --- all the other days are weak (week) days.
( weak与 week的发音一样.而美国人的工作天只有五天,即从 Monday到 Friday ,这五天是他们的week days
你最需要的是一周的那些天?周六和周日（是个谜语）