Ответ:
D/ 21. can't, 22. can, 23. can, 24. can't, 25. can.
E/ 26. Yes, Matt will go scuba diving, when he's on holiday.
27. Yes, Tracy will meet on the airport.
28. Yes, Dave will come hiking with us.
29. No, Sara won't eat tonight, she's not hungry.
30. Yes, Tom will miss his plane, if he doesn't hurry.
Объяснение: