... our teacher male?
Is
... you eighteen years old?
Are
Sam/is/in/his bedroom? + No,...
Is Sam in his bedroom? + No, he isn't
... I from the UK?
Am
Negative: It is cold today.
It is not cold today.
Negative: My friends & I are in a Math lesson.
My friends & I aren't in a Math lesson.
… you hungry?
Are
... we at school?
Are
Negative: My teacher is British
My teacher is not British.
Negative: I am from the USA.
I am not from the USA.
your/teachers?/are/parents + No,...
Are your parents teachers? + No, they aren't.
you/from/China?/are + No,...
Are you from China? + No, I'm not
... your friends all at this school?
Are
eighteen/Is/years old?/he + No, he...
Is he eighteen years old? No, he isn't