两个句型转换~
问题描述：
两个句型转换~
1.While some of the Aboriginal languages have been lost,people are trying hard to protect and record what is left.
____some of the Aboriginal languages ____ ____ ,people are trying hard to protect and record what is left.
2.We benefit greatly from doing morning exercise.
Doing morning exercise___ us____ ____ ____ ____.(4空)
答
1 as have lost
2 .