Объяснение:
1.I have alredy seen
2.My brother has already heard.
3.We have already had lunch.
4.My friends have spoken.
5.I have never been.
6.My sister has not worn
7.We have not bought food.
8.My brother has not fallen asleep.
9.непонятно написано
10.Have you found
11.Has your friend kept
12.Have you ever been
13.What have you lost
14.Wher have you been
15.What have you chosen?
дальше сам,много писать,думаю ты понял (а) принцип как делать