3.заполни пропуски в предложениях местоимениями в именительном падеже. am russian. jack is my brother. is 10 years old. these are my friends. are in my class. look at the book. is very old! i and mary are good friends. are in class5.

I  am Russian.
Jack is my brother.He is 10 years old.
These are my friends. They are in my class.
Look at the book.It is very old!
I and Mary are good friends. She  are in class 5.