1) He is writing a dictation now, isn't he?
Who is writing a dictation now?
Is he writing a dictation now?
Is he writing a dictation or a letter now?
What is he writing now?
2) Masha and Kate live in the biggest house in our city, don't they?
Who lives in the biggest house in our city?
Do Masha and Kate live in the biggest house in our city?
Do Masha and Kate live in the biggest or the smallest house in our city?
Where do Masha and Kate live?
1) He is writing a dictation now, isn't he?
Who is writing a dictation now?
Is he writing a dictation now?
Is he writing a dictation or a letter now?
What is he writing now?
2) Masha and Kate live in the biggest house in our city, don't they?
Who lives in the biggest house in our city?
Do Masha and Kate live in the biggest house in our city?
Do Masha and Kate live in the biggest or the smallest house in our city?
Where do Masha and Kate live?