The thief was noticed _____the office building by the back door on the screen.
—Lions are very________,but many children like them. —But I don’t like them at all.
—I hear there are many animals in the park.Let’s go to the zoo. —________.
Which animal comes from China?
Don’t________trees and we should love nature(自然).
—________do they go to the zoo? —Because they want to see pandas.