Дополните следующие утверждения присоединенными вопросами. 1. it's my 2. betty's son isn't 3. she can speak

Its my key,isnt it
bettys son isnt ill,is he
she can speak spanish,cant she

1. It's my key, isn't it?
2. Betty's son isn't ill, is he?
3. She can speak Spanish, can't she?