graduated from high school , my family had a business____ I never thought about getting a college education.

learned a man is, more modest be usually become.

Boys ,don’t lose ___in playing computer games .It’s bad for your eyes to play for a long time.

—What areyou busy with — We are carrying out a research ____ thecauses of cancer.

It’s required that the students___ mobile phones in their school, so seldom ____ them using one.