.
___ is known to us all is that the 2010 World Expo will take place in Shanghai.
| A．It | B．What | C．As | D．Which |
Low-carbon lifestyle is of great benefit to improve the world environment．________can be enjoyed from it until you have a deep understanding of it, however．
| A．Something | B．Nothing | C．Few | D．Much |
The chemistry teacher demanded that the laboratory report _______ immediately after the experiment was done.
| A．to be written | B．would be written | C．be written | D．must be written |
--- Has Li Lei finished his work today?
--- I have no idea, but he ______ it when I saw him this morning.
| A．had done | B．would do | C．was doing | D．did |
_____ Sun Yue has been selected into the L.A.Lakers(湖人队), he might as well make full use of the chance.
A. After B. Although C. As soon as D. Now that
Thousands of Haitians cheered as the Chinese medical team arrived，many of ____ even cried with joy.
| A．those | B．them | C．whom | D．who |