Some of you may have finished Unit One.________，you can go on to Unit Two.
| A．If you may | B．If you do |
| C．If not | D．If so |
The newcomer is from Tibet, ________ I can tell from his appearance.
| A．which | B．what | C．where | D．who |
The time is not far away______modern communications will become widespread in China’s vast countryside.
| A．as | B．until | C．before | D．when |
The government has taken some measures to solve the shortage of electricity, but it may be some time ___________ the situation improves.
| A．since | B．when | C．unless | D．before |
You will see this product _____wherever you go.
| A．to be advertised | B．advertised | C．advertise | D．advertising |
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 |