Ответ:

1 if you only he could come to the party

2 i wish i had a pencil right now

3 i wish the weather was not so ugly

4 if only we could not work every weekends

5 i wish i understood German

6 if only we could be on holidays

7 i wish people didn't litter

8 i wish you looked where you were going

9 if only we were having pizza for dinner

10 i wish you didn't think so negatively