3-Use the contractions of the verb to be to complete the sentences.
a)Sarah is a student. She's in my class.
b)i have one brother. He______twenty years old.
c)i like my classmates. They______friendly.
d)we live in an apartment. It______on pine street.
e)katy and i live in a big house. We_______roomates.
f)i go to school. I_____a student.​