The best way to explore _______ countryside is on _______foot.
I find _______important to know about the culture when learning a language.
— Do you know where Kate is? — No, I don’t. I______ her since last week.
–what did you do after school yesterday? --I_____ basketball with my friends.
A child ______ parents are dead is called an orphan.
Mr. Li is______ Chairman of the meeting.