—There is a girl in front of our classroom. Do you know ? —She is an English teacher.
There is a very big river _____ their school _____ the village.
It’s easy ________ chess.
How long does it take you _____ to work?
_____ our group, Li Fei often goes to bed late _____ school nights.
—What time do you usually get _____? —Well, _____ six thirty.