ПОМОГИТЕ ПОЖАЛУЙСТА!!
17. Can/Should I ask you a question?
18. Will/Shall we go out for lunch today?
19. You must/shouldn’t stay at home if you are ill.
20. Tommy can’t/couldn’t tell the time when he was a baby.
21. My book can’t/mustn’t be in the house. I’ve looked everything.
22. You haven’t/needn’t clean the windows. I’ve already done them.
23. Sam left late for the airport this morning. He should/could have missed his flight.