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.