---Do you know our town at all? ---No, this is the first time I_______ here.
Look, so many young men ___________with their mobile phones on the underground.
You have discussed for an hour! Have you decided ________?
--- Your shirt feels soft. Is it ________ silk? --- Yes. It’s ________ Hangzhou.
I ___________my new bike for a week, my father _________ it for me last week.
Three fourths of the people in the country _____ farmers. But three fourths of the land ____ polluted.