为什么This is paper中间不用加a,也就是为什么不说This is a paper
为什么This is paper中间不用加a,也就是为什么不说This is a paper
this is 后加"a pen "还是"pen ",为什么"this is paper"可以不加?"these are
a paper plant is where paper is made,为什么要用WHERE
This is a boy and a girl.为什么不说these are a boy and a girl.
there is a piece of paper,on it __ words"this is a pen"
1.This is a piece of writing paper.改为复数 2.The cat is eating
英语翻译This picec of paper is too samll,piease give me a big A
This is a piece of paper.You can send your friend a ________
This piece of paper is too samll,piease give me a big A .one
this is a revision paper .When you do it,you'd better make a
This machine is for cutting up paper
This is a flower .为什么要加a