Bonjour pourriez-vous m’aider svp. Merci

1) he's been awake for 3 hours

2) he's been awake since 3 a.m.

3) he has been at sea for 6 weeks

4) she has been a professor of economics at oxford since 1991

5) we haven't been paying for 5 weeks

voila bonne journée a toi