4. замените модальные глаголы соответствующими эквивалентами: 1) he couldn’t explain anything. 2) you may take a short break now. 3) i must leave at once. 4) she can run 1500 metres in 5 minutes. 5) last year this scientist might investigate new means of production.

1) He wasn`t able to explain anything. 2) You are allowed to take a short break now. 3) I have to leave at once. 4) She is able to run 1500 metres in 5 minutes. 5) Last year this scientist was allowed investigate new means of production.