It is ________(ten, two)in the morning.
Mike is ________ (sit, sitting)in the classroom. He is having an ________(England, English) lesson. He is
listening to the teacher ________(careful, carefully) . His ________(friend, friends) , David and Wang
Bing , are looking at the ________(blackboard, keyboard) . Su Yang and Su
Hai are thinking. Gao Shan is ________(write, writing) something.
________(all, All) of ________(they, them) are working hard.