We have every reason to believe that ______ 2010 World Expo in Shanghai will be ______ success.
| A．/; a | B．the; / | C．the; a | D．a; a |
She wondered __________.
| A．how much he cost the computer | B．how much he paid for the computer |
| C．how much the computer will cost him | D．how much did he spend on the computer |
---Do you know ________?
--- I'm not sure. Maybe he is a businessman.
| A． who he is | B．who is he | C．what he does | D．what does he do |
He is a friend ______ can help you in time of need.
| A．who he | B．whose | C．/ | D．who |
The most important thing ______ we should pay attention to is the first thing ______ I have said.
| A．which, that | B．that, which | C．which, which | D．that, that |
This is the only one of these books that ______worth reading.
| A．has | B．have | C．is | D．are |