You know，the tickets for Jay’s concert can ________ online from tomorrow.
| A．be booked |
| B．book |
| C．order |
| D．be ordered |
Just then,another man, _______ behind the first,spoke up，“Who are you?”.
| A．sitting | B．to sit |
| C．sat | D．having sat |
You were silly not _______ your car.
| A．to lock | B．to have locked |
| C．locking | D．having locked |
—Can the project be finished as planned?
—Sure, _______ it completed in time, we’ll work two more hours a day.
| A．having got | B．to get |
| C．getting | D．get |
This novel is set in the modern city, San Francisco, so once_______, it will be very popular.
| A．publishes | B．having published |
| C．publishing | D．published |
Walter offered us a lift when he was leaving the office, but our work _______,we refused the offer.
| A．not finishing |
| B．had not been finished |
| C．not having finished |
| D．not having been finished |