改句子he wants to be a professional singer.he is singing for groups of people at the city hospital
问题描述：
改句子he wants to be a professional singer.he is singing for groups of people at the city hospital
合并成一个定语从句
he ______ ______ to be a professional singer is sing for groups of people at the city hospital
答
He (who wants ) to be a professional singer is singing for groups of people at the city hospital