. ___________ anything about the accident, he went to work as usual..
| A．Not known | B．Known not | C．Knowing not | D．Not knowing |
Barack Obama delivered a speech to 500 local youths during his visit to China, many of _______ were from Fudan University and Tongji University.
| A．them | B．whom | C．which | D．those |
3．Lily took a few friends to my birthday party，none of __________ I was familiar with．
| A．which | B．whose | C．that | D．whom |
.Europe has achieved more in controlling the AIDS virus than Asia in the past ten years, _________ the number of people infected with the virus is going up sharply.
| A．when | B．that | C．so that | D．where |
（重庆一中高三下第三次月考）13. There are many smokers in China, _____ the number of students who pick up this habit _____ increased a lot.
| A. where; has |
B. which; has |
C. where; have |
D. as; have |
We are living in an age ______ many things are done on computer.
| A．which | B．that | C．whose | D．when |