–Can I ask you _________questions? – Sure.
-What do you think of my answer to the questions?-Sorry. What’s that? I______ about something else.
The pupils hurried to the classroom______ the bell rang.
Yesterday I was just to go out _____ someone telephoned me.
A boy with two dogs_____ when the earthquake rocked the city.
Before I started high school, I used to spend a lot of time _____ games with my friends.