Underline the correct verb form.
1. His plane took off/ has taken off afew minutes ago.
2. The president has resigned / has been resigned and a new president has elected / has been elected.
3. I work /’ve been working in Dubai since last March. When did you arrive / have you arrived?
4. How many emails have you sent / have you been sending?
5. What did you do / have you been doing in the bathroom? You were /‘vebeen in there for ages.
6. A huge snowstorm has hit / has been hit New York. Over 40 cms of snow has fallen / has been falling in the past 12 hours. People have advised / have been advised to stay at home.​