Eery morning you can hear a [music]speaking voice

问题描述:

Eery morning you can hear a [music]speaking voice
They have [自愿]to do a lot of things for the patients in the hospital.
He knows smoking and drinking   [影响]his health,but he can't give it up
关于start的用法,可以是start to dosth吗?

voluntary
affect解析一下volunteered volunteer to do sth 自愿做某事