用括号中所给动词的正确形式填空.快来帮个手..
He __(work) in this company sine 1996.
They____(just finished) the work.
You___(enter) the data into the computer.
I___(cook) some food for my mother.
She___(make) a sandwich for herself.
We___(set) the tables for the book exhibition.
The old man___(teach) in this school for twenty years.
The students___(stand) for three hours.
The lady___(prepare) the meal.
The workers___(build) the road.