英语题啊~~都挺简单的，但是我不会

一、1.写出My name is Henry的同义句。
I am Henry.
2.改正She is an girl中的错误。
She is a girl.
二、连词成句。
1.touch your please head(.)
Touch your head,please./Please touch your head.
2.feet they and hands are(.)
They are hands and feet.
3.an wgat's this it's ear(?/.)
What's this? It's an ear.
4.are these books are they what(?/.)
三、1.This is an arm.(改为一般疑问句）
Is this an arm?
2.Is this a nose?(做否定回答）
No, it isn't.
四、请用括号所给的单词的适当形式填空。
1.There are nine__bags___(bag)on the desk.
2.How many_girls___(girl)are there in the classroom.
3.Henry is__my___(I)friend.
4-What are__these___(this)?
-They're bags
5.These are__dogs___(dog),not cats.

一、1.I amhenry.
2.She is a girl.
二、1.Please touch your head.