решите задачку пожалуста срочно нада толко 3 и 4 пожалуйста помогите

3.
1)They are celebrating their birthday.
2)She is dancing.
3)We aren't camping.
4)I am eating chicken.
5)He isn't walking to the beach.
6)I am not wearing a black T-shirt.
4.
1)I am not doing my homework. I am watching TV.
2)He isn't playing the guitar. He's singing.
3)They aren't listening to the radio. They're playing a computer game.
4)She isn't making a cake. She's eating some grapes.