Ответ:
1.this is a tree. the tree is green
2.I can see three boys. The boys are playing
3.I have a bicycle. The bicycle is black.My friend has no bicycle
4.Our room is large
5.we wrote a dictation yesterday. The dictation was long
6.she has two daughters and a son. Her son is a pupil
7.my brother's friend has no dog
8.this pencil is broken. give me that pencil, please
9.she has a ball. the ball is big
10. l got a letter from my friend yesterday. The letter was interesting