4. she ) to have a problem now. 5.not many passanger planes ) faster than should. 8.he ) very hard this week. 9.it )since i got up. 10.all the lights on) today.

4. she is appearing

5.flew

8. has worked

9. has been snowing

10.are switched on

4. she is appearing to have a problem now.

5.Not many passanger planes flew faster than should.

9. It  has been snowing since I got up 

10.All the lights are switched on today