1)The sky is blue
Is the sky blue?
What is blue?
Is the sky blue or grey?
The sky is blue, isn`t it?
2) The children are at home now
Are the children at home now?
Where are the children now?
Are the children at home or at school now?
The children are at home now, aren`t they?
3) Her brother is a doctor
Is her brother a doctor?
Whose brother is a doctor?
Is her brother a doctor or a driver?
Her brother is a doctor, isn`t he?
Объяснение:
