Puneti verbele din paranteze la timpul Present Perfect sau Present Perfect Continuu :

1.Richard Branson, owner of Virgin Atlantic, _____(fly) balloons for many years. He still flies them today.

2.I know he _____(make) a transatlantic flight, but I'm not sure when.

3.Scientists _____(work) on a new plane but the work is not finished yet.

4.John Glenn _____(orbit) the Earth many times in his life.

5.Mir, the space station, _____(orbit) the Earth non-stop since 1986.

6.Captain Lewis is a very experienced Concorde pilot. He ______(fly) the supersonic plane for 10 years.

7.They_____(build) a new terminal in the city so more airlines can use the airport now.