初中英语单词Teachers often complain about t____ lazy students in the classrooms.
问题描述：
初中英语单词Teachers often complain about t____ lazy students in the classrooms.
Teachers often complain about t____ lazy students in the classrooms.
答
大多数的介词后面的动词要用v.+ing的形式
teaching
老师们经常为给懒散的学生上课而抱怨