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英语填词doesn'talwaysbringhappiness.Ihavetotwodollarsforthatbook.Toistobuyandsellthings.wearebusyandwearenot.Ifonestudenthasabookandstudenhasapen,cantheytradeeachother?

题目详情
英语填词
___doesn't always bring happiness.
I have to ___ two dollars for that book.
To ___ is to buy and sell things.
___ we are busy and ___ we are not.
If one student has a book and ___studen has a pen ,can they trade each other?
▼优质解答
答案和解析
Money
pay
trade
sometimes sometimes
another