Question

Помогите составить 5 полож. и 5 отриц.предложений в present perfect

Answer 1

1. i have just opened the window
i haven't opened the window yet
2. peter has just come back home
peter hasn't come back home yet
3. mary has played the piano since 10
mary hasn't played the piano since 10
4. they have been to London
they hve never been to London
5. we have already done our homework
we haven't done out homework yet