Ответ:

1) Richard has not finished his project yet

2) Have you cleaned your bedroom? No, I haven't

3) Patricia has enjoyed her birthday very much

4) She has received a lot of presents from friends

5) The students have done some

6) Those books have come

7) I have not watched

8)We have already visited

9) My neighbor has not taken

10) Anne has showed

11) Have you ever eaten octopus? Yes, I have

12) George has seen

13) My parents have not come

14) Hector has celebrated

15) Mary and Roger have getton married

16) Somuel has found

17) These girls have not worn

18) I have drawing.