change the active voice into the passive voice.主动改被动
问题描述：
change the active voice into the passive voice.主动改被动
Do they take care of the sick?
He was operating on an old patient.
I will be looking into the matter.
You may find this kind of trees everywhere.
答
Are the sick been taken care of?The old patient is being operated on by him.The matter will be taken good care of.(the matter will be looked into)This kind of trees can be found everywhere.