Mrs. White became a teacher in 1985. She _____ for twenty years by next summer.
—Have you ________ any information? —No, I’m going to ____________ the business department.
—You've made great progress in your studies of English, haven't you? —Yes, but much________to be done.
It is reported that the police will soon ____ the case of two missing children.
Sometimes the police are not absolutely sure that someone has committed a crime, but ________ him of having done it.
Considering your salary, you should _______ at least 100 dollars a week.