The theory _____ by Einstein was later to prove true, but at that time few people could accept it .
You were silly not _______ your car.
—Can the project be finished as planned? —Sure, _______ it completed in time, we’ll work two more hours a day.
This novel is set in the modern city, San Francisco, so once_______, it will be very popular.
Walter offered us a lift when he was leaving the office, but our work _______,we refused the offer.
—Is Bob still performing? —Im afraid not.He is said _______ the stage already as he has become an official.