The process of curing a disease is like a war ___ different soldiers fight against an enemy.
| A．when | B．where | C．what | D．that |
Mr. White, who comes from __________ European country, has formed habit of attending church on Sundays.
| A．an; /；the |
| B．a; the; / |
| C．an; the; / |
| D．a; a; a |
The killer insisted that she was de-fending herself when __________.
| A．attacking |
| B．attacked |
| C．to attack |
| D．having attacked |
The 2010 World Expo held in Shanghai helps to __________ the whole world's attention on the big city of China again.
| A．affect |
| B．attack |
| C．pay |
| D．focus |
So sudden __________ that the enemy had no time to escape.
| A．did the attack |
| B．the attack did |
| C．was the attack |
| D．the attack was |
-How do you know Peter will win first prize in the competition?
-__________ He's very clever and studies hard as well.
| A．Why not? |
| B．Well done! |
| C．It's my guess. |
| D．It's up to you. |