—Who’s the man over there?Is he our English teacher?—No,he________be our English teacher.He________be our Chinese teacher because our Chinese teacher is much taller than our English teacher.
Is this ________ elephant or _______ lion?
Let’s play tennis!—. I need to go to school today.
—What’s favorite subject? —My favorite subject is math.
Bob's mother is my aunt. He is my ______
I don’t like science _____ it’s difficult.