Поставьте в утверждение отрицание и вопросительную форму present perfect she has tidied her room. she has finished tidying her room. you can see it is tidy now. he has lost his keys. he is still looking for them. i've lost 10 kilos.

she hasn't tidied her room
has she tidied her room?
she hasn't finished tidying her room
has she finished tidying her room?
he hasn't lost his keys
has he lost his keys?
i haven't lost 10 kilos
have i lost 10 kilos?