The of surfing the Internet is how you can tell whether the information is true or not.
| A．ability | B．competition | C．challenge | D．knowledge |
Although this medicine can cure you _____ your illness, it has a bad effect _____ you.
| A．for; in | B．for; on | C．of; on | D．of; at |
He gained his _____ by printing _____ of famous writers.
| A．wealth; work | B．wealths; works | C．wealths; work | D．wealth; works |
All of ______ sudden someone shouted, “It is time to put ______ end to the meeting.”
| A．a;an | B．a; / | C．/; an | D．/; / |
When she heard the sad news of her family, the lady____.
| A．broke down | B．broke out | C．broke up | D．broke into |
English is understood all over the world_____ Turkish is spoken by only a few people outside Turkey itself.
| A．while | B．when | C．as | D．since |