Not until I began to work ____ realize how much time I had wasted.
| A．didn't I | B．did I | C．I didn't | D．I |
, the sun was rising in the east.
| A．Arriving there | B．We arriving there | C．Having arrived there | D．We arrived |
If you keep on working hard, you are sure to in your career.
| A．go away | B．get off | C．go ahead | D．get ahead |
He was the last man I wanted to meet, but I managed to smile at him.
| A．therefore | B．however | C．besides | D．somehow |
Across North China in the world, namely the Great Wall.
| A．the longest wall runs | B．runs the longest wall |
| C．does run the longest | D．does the longest wall run |
----How long in hospital?
----One more week at most. He is quickly recovering.
| A．does your father stay | B．has your father stayed |
| C．is your father staying | D．did your father stay |