Question

连词成句

are，in，you，interestsd，why，so，trees
the，oldest，biggest，things，living，they，are Earth，on，and
enjoy，you，do，breathing，air，freash
conditioners，natural，trees，air，are
fifteen，three，the，of，job，do，can，trees，air conditioners

Answer 1

1.Why are you so interested in trees? 你为什么对树那么感兴趣？
2.They are the oldest and biggest living things on Earth. 它们是地球上最古老且最大的生物。
3.Do you enjoy breathing fresh air? 你喜欢呼吸新鲜空气吗？
4.Trees are natural air conditioners.树是天然的空调。
5.Three trees can do the job of fifteen air conditioners.三棵树相当于十五台空调的净化功效。
望采纳，并祝学习进步~