With nothing ________ to burn, the fire became weak and finally died out before the firefighters came.
| A．leave | B．leaving | C．left | D．to leave |
If mankind is trying to find new places inspace to live and get new resources, it is fine.
| A．the; the | B．/; / | C．a; the | D．the; a |
All flightsbecause of the storm, they had to wait in the hall.
| A．have put off | B．were put off |
| C．have been put off | D．having been put off |
—Have you ever visited the Water Cube?
—Yes. When I served as a volunteer in Beijing, I it twice.
| A．have visited | B．visited |
| C．had visited | D．had been visiting |
—Did your sister get the position offered by the company?
—She failed in the job interview and is now in low spirits.
—I’m sorry for her.
—.
| A．Thank you | B．You’re welcome | C．I would think so | D．Never mind |
—What’s your feeling now?
—I am terribly sorry. If only I here yesterday!
| A．came | B．would have come | C．have come | D．had come |