How many l______languages are there in the world?

问题描述:

How many l______languages are there in the world?
1.How many l______languages are there in the world?
2.Let's stop m______nosic.The baby will fall asleep.
3.They collect waste paper for r____.

第一个是living,是现存语言的意思.
第二个是making
第三个是recycling