I advise you to take school more seriously, otherwise you’ll have to go out and work ______.
5. About 40 _____ of the population of that country _____ on farms.
4. _____ can be done _____ been done.
3. He played on the _____ for two hours and when he returned he found half his goods _____ stolen.
2. The League secretary and monitor _____ asked to make a speech at the meeting.
小测验 1.The whole class _____ the teacher attentively.