_Who is _____ English teacher, Lu Yu? _ Mr Tian teaches _______ English.
There used __ a bus stop in the corner.
Would you like tea or water?— _________ is OK. I really don’t mind.
What’s your favorite fruit?—Apples. You know, _______ apple a day keeps the doctor away.
I’d like to help the homeless people in the earthquake. －You ________ join a volunteer group.