Ответ:

Объяснение:

1. .....to tell you about our plans.

2. .......us

3. ......knifes...

4. .....those...

5. .....these...

6. .....this...

7. ......first...

8. .....children...

9. ...thirty's (не уверена)

10. .....best...

11. ....us...

12. ....our...

13. ....much easier...

14. ....mine...

15. ....these...

16. ....counties...

17. ... Mary's....

18. .... that...(не уверена)

19. ....it's....

20. ....teeth....

1. I'm writing to tell your about our plans

2. it's a shame you can't come with us

3. are there six knives on the table?

4. has Helen got those textbooks?

5. are those my glasses?

6. is that your new scooter?

7. who lives on the first floor?

8. the book is about three children

9. my cousin is in her late thirsty

10. my best friend is Larry

11. would you like to go with us?

12. where are our tickets?

13. the solution is easier than you think

14. that was Oleg's idea, not mine.

15. these are not easy questions to answer.

16. she visited 5 countries

17. whose flowers are these? they are Mary's

18. who are those people over there?

19. every old castle has it's legends.

20. why do milk teeth fall out?

надеюсь всё правильно