1.This is a piece of writing paper.改为复数 2.The cat is eating biscuits under the chair改为否定句

题目

1.This is a piece of writing paper.改为复数 2.The cat is eating biscuits under the chair改为否定句

答案

1.This is a piece of writing paper.改为复数
These are some pieces of writing paper.
2.The cat is eating biscuits under the chair改为否定句
The cat is not eating biscuits under the chair.
is not 可以缩写成：isn't
不明白的再问哟,请及时采纳,多谢!