kochani błagam pomocy w tych trzech zadaniach jestem głąb

To proste ;) Wystarczy wiedzieć jak powstają przeczenia z "was" i "were":
"was" + "not" = wasn't
"were" + "not" = weren't
2 My mum and dad weren't drinking lemonade.
3 I wasn't enjoying the music.
4 The waiters weren't smiling.
5 The chef wasn't making a pizza for us.