<span>Is this your invention?
Look there. Is this the famous inventor on the bus?
Come here and look. Aren't that robots nice?.
Are the computers in this room useful?
Is this your smartphone over there?</span>
1 - isn't it
2 - do we
3 - didn't she
4 - doesn't he
5 - are they
6 - won't he
Yana cooks very well.
They play football every weekend
Present Simple сам по себе очень прост. Если используется в сочетании с I, you, we, they - после глагола ничего не ставим. Если в сочетании с he, she, it - после глагола добавляем -s.
Например:
They play basketball very well;
She reads books.