题目

Both of my parents are teachers(否定句） ______of my parents_______ _______ _______
U3 is too diffcult for him to understand(同义句）
U3 is______diffcult ________he can't understand it

提问时间：2020-06-02

答案

1.None of my parents is a teacher./ Both of my parents are not teachers.
2.U3 is so difficult that he can't understand it.