—It’s time _____ lunch. —OK. Let’s _____.
While my brother _______ football with his friends yesterday, my sister _______ her homework.
Not all events in history are as __________ as this.
–Can you __________ your little sister? I’m cooking now.- All right. I’ll do it right now.
If we travel a short distance, we should walk _____ taking a bus. Then we’ll be greener people.
The boy found __________ hard to get along with the other classmates.