1) Someone stole my cigarettes when I (not look) . not looked
were not looking
was not looking
did not look

2) Mr. Brown (have) a shower when I knocked on his door.

was having
were having
did have
had

3) I got up at 7 and then I (have) a big breakfast.

have
was having
had
was hading

4) I (cook) while Carol was doing the washing up.

was cooking
have been cooking
cooked
were cooking

5) I (finish) my work at 7 yesterday.

were finishing
was finishing
have been finishing
finished

6) Jane (not be) at home yesterday evening.

not was
was not being
were not
was not

7) We (not be) on holiday last week.

were not
was not being
was not
were not being