we ,trees ,cities ,cool ,because,green,they,our,plant,help,m

we plant trees because they help made our cities green and cool
祝好!
如果不懂建议重新提问,也可以直接追问哦.
再问： 那再问你一个，也是连词成句：picnic，it，not,have,are,going,rains,the,we,if,tomorrow,to
再答： picnic，it，not,have,are,going,rains,the,we,if,tomorrow,to if it rains we are not going to have the picnit tomorrow.