1. The 44-year-old Cameron, ______ youngest British Prime Minister in nearly 200 years, wants to improve Sino-British relations to ______ new high.

 A. a; the                          B£®a; a                           C£®the; a                          D£®the; the

2. After two years’ research, we now have a ____better understanding of the disease.

3. — Lend me some more money, will you?

 — Sorry, I’ve got ____ at hand myself. You know the MP3 player cost me all I had just now.