问题 填空题 找出不同类的单词写在后面的横线上。1. sing2. nurse3. old4. crying5. daughtertalkdoctorinsinging sondoctorcarpenteronlaughing studentlaughbusinessmanundertalkingsisterworkcryoutplaybrother______________________________________________________________________ 答案 1. doctor 2. cry 3. old 4. play 5. student