—Did you see a girl in white pass by just now? —No, sir. I________a newspaper.
If you don’t work _______ enough, I don’t think your dream will come _______.
--- _______ will the fog and haze(雾霾) last? ---I have no idea. There is no sign of an end.
Many old people _________ his age die _________ cancer.
Look, the old man who is playingguitar is university teacher.
_____, I practice speaking English in the park. The air there is very fresh.