A. The nouns ending in o have a tricky spelling in the plural. radios
pianos
photos
kilos
videos
studios
stereos
cockatoos
kangaroos
ZOOS
discos
dodo(e)s
dingo(e)s
buffalo(e)s
zero(e)s
mosquito(e)s
volcano(e)s
tomatoes
potatoes
Negroes
heroes
echoes ​

Today I would like to talk about my school and school friends.  Most pupils will say that school is the  worst place in the world.But I think that it isn’t true. In my opinion they think and say so only because they are tired after school. Students have a lot of difficult homework after school time. So they ought to do it anyway despite the fact that they want to play the computer games or to have a stroll with their friends. But nevertheless children love their schools. And one of the most obvious reason is our school friends! I think that every pupil has at least one best friend at school. Every morning you move towards your school thinking about  upcoming fun at the lessons, about the secrets you can find out today, news you would discuss with your friend, don’t you? As for me, I have a lot of friends at school.  I appreciate every minute that I have  spent with friends.

I'm a student. I'm at college.
My brother is an architect. He isn't an engineer.
My sister is at work. She is a doctor.
She is a student.
Are you a student?-no, I'm a doctor.
My sister is at home.
We aren't at school. We are at home.
My brother is a student/pupil. He is at school.
Is your mother at home?-no, she is at work.
Is your cousin at home?- no, he is at school. He is a student/pupil.
Is your sister a teacher? -no, she is a student.
Is your father at work?- no, he is at home.
Is your sister a designer?- yes. Is she at home?- no, she is at work.
My grandfather is a scientist.
My mother isn't a teacher. She is a doctor.