Ответ:

Ex. 3

Объяснение:

1. Father isn't writing a book. He is reading.

2. Mother isn't cooking food. She is cleaning the window.

3. Liz and Mary are not swimming. They are playing with a kitten.

4. Jack and Johnny are not playing tennis. They are playing badminton.

5. Ann is not painting. She is feeding the dog. (Я не вижу АННУ на картинке, если нужно переделаю, когда увижу, что она делает)

6. The dog is not jumping. It is eating.

7. Polly is not taking pictures. She is riding a bike.