Ответ:

  1. Have Uncle Mike and Jake’s cousins arrived? No, they haven’t.
  2. Has Mum received a text from Uncle Mike? Yes, she has.
  3. Has Jake tidied his bedroom? Yes, he has.
  4. Has Jake hoovered the living room? No, he hasn’t.
  5. Has Jake finished his homework? No, he hasn’t.
  6. Has Mum finished decorating the birthday cake? No, she hasn’t.