1. My mother watched the police ____ they walked through down the street.

as
when
both

2. _____ are we going to the store?

As
When
both

3. We can talk ____ we walk to school.

when
as
both

4. The children like to play ___ I do my work.

when
as
both

5. _____ do you go to school?

As
When
both

6. I like to read _____ my husband watches TV.

when
as
both

7. ____ you do you have time?

When
As
both

8. I need to study for my exam ____ my sister cleans our room.

as
when
both