9. After she _______________________ (wash) the curtains, she _______________________ (clean) the windows.
10. They ___________________ (go) for a sightseeing tour after the bus ________________ (arrive).
11. Before he _______________________ (mow) the lawn, he ________________________ (pick) some roses.
12. After he __________________________ (finish) school, he _________________________(work) for a magazine.