问题描述：
①What must the children do on Friday evening?
我写的是pack their books但老师说是They must pack their books.为什么……
②How will they move their things to the new house?
我写的是They will use the van to move their things to the new house.van,为什么……
我写的是pack their books但老师说是They must pack their books.为什么……
②How will they move their things to the new house?
我写的是They will use the van to move their things to the new house.van,为什么……
问题解答：
我来补答展开全文阅读