You'd better _______ your score and see if you have passed the exam.
| A．add up | B．add to |
| C．add up to | D．add |
The wild flowers looked like a soft orange blanket_____________-the desert.
| A．covering | B．covered | C．cover | D．to cover |
----Would you join us in the summer camp ?
---- , you see.
| A．It all depends | B．It doesn't matter | C．That is right | D．I'll follow you |
China won 51 gold medals in the 2008 Olympic Games, _______ first among all the competing countries.
| A．ranked | B．to rank | C．to be ranking | D．ranking |
. We are now living in an age _______ many things are done on computer.
| A．when | B．where | C．how | D．why |
The mayor of Shanghai says that all construction work for the World Expo ______ by now.
| A．has been completed | B．has completed |
| C．will have been completed | D．will have complete |