1# I wish they had not eaten all the Pizza.
2# There is no point in inviting her to the party. She would never come.
3#Pat wouldn’t have passed his exam if he had not arranged more lessons.
Next questions…
1# She ate all the food that we had made.
2# He took off the jacket he had put on before.( put is put in past tense)
3# He was really angry because he waited for more than half an hour when I arrived.
4# When the play started I had already apologized to my friend.
5# We watched the play with the lights off.
Side note: if helping verbs aren’t allowed take out the had in 2# and 4# of section two. Good luck.