He _____ himself in Shanghai.

Harry，why are you driving so slowly？Do ________a bit or we’ll never get home before dark.

---- Tom wants to be another Obama after he graduates from school. ---- That sounds great, but how can he ____ a person like him if he goes on like this?

To keep the town clean, the truck ____ garbage is prevented ____ entering the town.

—When did you      staying up so late?—When I entered this school two years ago, where students have too much homework to do.