He sings for groups of people at the city hospital to cheer them up.
问题描述：
He sings for groups of people at the city hospital to cheer them up.
答
他为城市医院的人唱歌,让他们高兴振奋.
he sings 说明他经常为这些人唱歌,帮助他们振奋精神,好好治病