教材回扣

Ⅰ.用本单元所学短语完成句子 1.They will keep their parents 　　　　 　　　　(了解) any progress they have made.  2.When the delayed flight will take off 　　　　 　　　　(取决于) the weather.  3.Previous generations 　　　　 　 　　　(集中精力于) getting children to school on time,fed,dressed and ready to learn. 

答案:1.informed of　2.depends on　3.concentrated on