—What’s the matter with Tim?
—Oh, Tim’s cellphone was left in a taxi accidentally, never ____ again.
| A.to find | B.to be found | C.finding | D.being found | 
With the rapid development of medical science, we ______ more new drugs used in the treatment of cancer.
| A.see | B.had seen | 
| C.will be seeing | D.would see | 
Although faced with stress from constant exams, she lost ______ of her enthusiasm for study.
| A.some | B.neither | C.none | D.all | 
All the citizens, young and old, walked and sang, beautifully ______ in new clothes of all kinds, _______ the success of their football team.
| A.dressing; celebrating | B.wearing; to celebrate | 
| C.dressed; to celebrate | D.worn; celebrating | 
Market economy is a competitive economy, ______ I think, suppliers, producers and dealers should obey market rules and develop cooperative relation based on mutual benefits.
| A.that | B. which | C.where | D.how | 
______ ever find something you want to save on your own computer, you can download it.
| A.Should you | B.If should you | 
| C.If you will | D.Will you |