Помогите плиз) Английский язык 6 класс!!!

1)
1. Polly has just brought Coca Cola
2. Ron hasn’t bought his costume yet
3. Have they bought the flowers yet?
4. Have they made the sandwiches yet?
5. They have just made sandwiches
6. Andrew has already repaired the DVD player
7. They haven’t decided what they will do next year yet.