I soon found that the work I was doing had al-ready been done by someone else. __________，I was wasting my time.
| A．In particular |
| B．All in all |
| C．In other words |
| D．After all |
If I hadn't lost my temper, things would not be worse now, but at that time I __________ out of control.
| A．were | B．was |
| C．had been | D．would be |
What a happy coincidence ！ If I hadn't visited Huangshan last week, I __________ my old friend.
| A．would meet | B．wouldn't meet |
| C．wouldn't have met | D．hadn't met |
The only way to succeed at the highest level is to have total belief __________ you are better than anyone else on the sports field.
| A．how | B．that |
| C．which | D．whether |
My sister met him at the Central Grand Theatre yesterday afternoon, so he __________ your lecture.
| A．couldn't attend | B．mustn't have attended |
| C．shouldn't attend | D．couldn't have attended |
__________ tourism developing, more and more people prefer to go traveling for a holiday.
| A．As | B．With |
| C．Upon | D．For |