The best way to explore _______ countryside is on _______foot.
My friends, after they heard what had happened to me, _____ said it sounded like an adventure.
Remember everybody you meet online is a stranger. So when you can’t see a person, they could be _________.
The Science Museum, ______we visited during a recent trip to Britain, is one of London’s attractions.
---Did you watch the basketball match yesterday? ---Yes, I did. You know, my brother_______ in the match.
--- Robert is indeed a wise man.---Oh, yes. How often I have regretted_______his advice!