A) PRONOUMS.

1. Mary is a student.
1. She is a student
.2. Tom is at school.
2. He is at school.
3.Peter and Jhohn are students.
3. They are students.
4. The teacher is here.
4. He is here.5. School is open.
5. It is open.6. Ana is single.
6. She is single7.
Lisa and Kate are at school
.7. They are at school.