It is said that his carelessness ____ the terrible accident.
After ____ seemed like hours he came out with a bitter smile.
According to the rules, students must not _____ their books during examinations.
---- “Each of the students, working hard at his or her lessons,___to go to university.” -----“So do I.”
---- “I haven't heard from Henry for a long time.” ------ “What do you suppose_____ to him?”
_____ seen smoking here will be fined.