句型转换,变为否定句

题目

句型转换,变为否定句
Her parents are Chinese teachers.
There is some coffee in the cup.
There are some trees behined my house.
I have some red coats.
The boy can sing English songs.
These are my books.
Her father is a factory worker.

答案

Her parents aren't Chinese teachers.There isn't some coffee in the cup.There aren't some trees behined my house.I havn't some red coats.The boy can't sing English songs.These aren't my books.Her fathe...