1. The children are walking [ C ] to school now.

2. Be quiet! The baby is sleeping [ B ] !

3. She isn't [ A ] riding her bike now.

4. We don't go [ C ] to school on Sundays.

5. Look at Mum! She is playing [ B ] basketball.

6. He eats [ A ] breakfast every morning.

7. He doesn't [ B ] work in a school.

8. Are [ B ] you talking on the phone?

9. They are having [ C ] lunch now.

1) The children are walking to school now. (C)

2) Be quiet! The baby is sleeping (B)

3) She isn't riding her bike now. (A)

4) We don't go to school on Sundays. (C)

5) Look at Mum! She is playing basketball. (B)

6) He eats breakfast every morning. (A)

7) He doesn't work in a school. (B)

8) Are you talking on the phone? (B)

9) They are having lunch now. (C)

Удачи в изучении английского! :)