Last Sunday, we visited the factory _____ my father ever worked for four years.
Jack does his homework ________ Mary. So they both always get good grades in the exams.
You can’t get in. The exam _________ for over 30 minutes.
I ____ an expensive gift for my birthday, but I could not ____ it.
--Dad, why should I stop computer games? --For your health, my boy, I’m afraid you .
The children were made ______ homework first.