1.She _____ (read) the book before she ____ (see) the movie.
2.They _____ (walk) in the park when it ____ (start) to rain.
3.I _____ (finish) my work before I ____ (go)home.
4.He _____ (play) the guitar when she _____ (arrive).
5.We _____ (not see) the movie yesterday because we _____ (already - watch) it last week.
6.She _____ (study) for the exam all day yesterday.
7.They _____ (not know) the answer until the teacher explained it.
8.He _____ (drive) to work when he _____ (get) a flat tire.
9.We _____ (not start) the party until everyone _____ (arrive).
10.She _____ (be) asleep for 10 hours when she finally ____ (wake)up.