Составь предложения,восстановив порядок слов и поставив глагол в правильную форму. polly/her ballet dance/just/perform. ron/his costume/yet/prepare. the children/ yet/ flowers/buy. the children/invite/ people to the concert/ yet. andy/ the poster/ just/finish.
The children haven't bought flowers yet.
Ron hasn't prepared his costume yet.
The children haven't invited people to the concert yet.
Polly has just performed her ballet dance.