1. Kevin WAS at my party
2. Nick WAS in class yesterday
3. It WAS warm yesterday
4. Tina and Jim WERE late
5. Etty WAS on the bus
6. Wel at the match WAS yesterday
7. Our teachers WERE pleased with us
8. I WAS (eating) at the restaurant
confused on what you meant by make negative sentences, and there sort of a couple mis-worded sentences too, but i hope this kind of helps :)
