Ответ:
1.We ought to win the race. → We are supposed to win the race.
2.I can swim. → I am able to swim.
3. You must meet my best friend. → You have to meet my best friend.
4.He should be in bed by now. → He is supposed to be in bed by now.
5.I must get up early. → I have to get up early.
Объяснение: