Переделайте предложение в активный ! we hope that in the 21st century russian will be studied in lots of countries.

Не "активный", а действительный залог:     we hope that in the 21st century people in lots of countries will study russian.

1. children at home now? no. they're at school.2. where is my sister? she's in her room.3. does your friend have an uncle? yes.4. how old is your mom? she's 42 years old.5. you should not help a friend with a home.6. can you play chess? yes.7. what can your little brother do? he can read and write.8. is his name tom? no. his name is bill.9. is your sister an accountant? no. she is a manager.10. why can not you help your friends? 11. my mother's sister does not live in russia. she lives in america.12. do they watch television now? no. they make a house.13. where does he always walk? he always walks in the park.14. lena's friends rarely go to the theater. they like to go to the movies.15. who works in the school? my mum.16. who plays the piano right now in your room? my sister.17. why are not you at school? i am sick.18. what are you doing now? i'm going home.

1. are children at the home now? no. they're at school. 2. where is my sister? she's in her room. 3. does your friend have an uncle? yes. 4. how old is your mom? she's 42 years old. 5. you should not help your friend with his homework. 6. can you play chess? yes. 7. what can you little brother do? he can read and write. 8. is his name is tom? no. his name is bill. 9. is your sister an  accountant? no. she is a manager. 10. why do you can't help your friends? 11. my mom's sister does not live in russia. she lives in america. 12. do they watch tv now? no. they doing a homework. 13. where does he always walks? he always walks in the park. 14. lena's friends rarely go to the theater. they like to go to the cinema. 15. who's work in the school? my mom. 16. who's playing piano in your room? my sister. 17. why are you not at school? i am sick. 18. what are you doing now? i'm going home.