this is letter A.改为否定句
this is letter A.改为否定句
this is a letter改为复数句
This is a letter from my good friend改为否定句 一般疑问句 肯定回答 否定回答
This is a clock改为否定句
This is a watch.改为否定句.
this is a map.(改为否定句)
This is a UFO改为否定句
l like the letter.改为一般疑问句 this is the left.改为否定句
this is a bag 改为否定句是什么
[紧急求助]This is a ruler.改为否定句
tHIS IS A MAP OF cHINA.改为否定句
This is a fat boy. 怎么改为否定句