Чем смогла помогла) Удачи)
21. b
22. c
23. b
24. b
25. a
26. b
27. c
28. a
29. a
30. b (a возможно)
1) have never heard
2) have you lived
3) have you invited
4) we have met
5) have you ever said
6) hasn't eaten (слов нет, но вставил свои по смыслу)
Ответ:
1B: , and you?
3A1: I have a painful toothache. Do you know anyone who can help me?
4A: Can I have the dentist's phone number, please?
Объяснение: