1. I always brush my teeth ___ I go to bed.

before

when

until

after

2. When Jane came home, Martin was very tired, because he ___ hard all day.

were

have been

was

had been working

3. You are covered with dirt! What ___?

you have done

has you been doing

do you do

have you been doing

4. I saw an accident ___ I was walking home.

when

before

since

after

5. I ___ my homework so now I can go meet my friends.

did

done

have done

was doing

6. Tomorrow from 8 to 10 p.m. I ___ a new movie.

will be watching

will watch

have watched

am going to watch