1 . When you finish reading this book, you will have _______ better knowledge of _______ first aid.

A．a, the

B．the, a

C．/, the

D．a, /

2 . Some people fear that ________ air pollution may bring about changes in _______ weather around the world.

A．/; the	B．the; /
C．an; the	D．the; a

3 . The heavy fog in London made _________deep impression on us, which was sometimes so heavy that we lost _________sight of everything around us.

A．a; the	B．a; 不填
C．the; the	D．the; 不填

4 . ----Our boss says the company is at _________ crossroads.
----Yes, it is challenging and demanding, but we shouldn’t lose _________ confidence.

A．the; /

B．the; the

C．a; a

D．/; the

5 . Wouldn’t it be ____ wonderful world if all nations lived in ____ peace with one another?

A．a; /

B．the; /

C．a; the

D．the; the

6 . After watching ________ TV, she played ________ violin for an hour.

A．不填, 不填	B．the, the
C．the, 不填	D．不填,   the

7 . In most western countries, on April Fool’s Day, people often play __ ___ trick on each other; children especially have great ______ fun.

A．a; a

B．the; the

C．/; a

D．a; /

8 . Mark never considers himself as ________ failure. On the contrary, he thinks he is on the road to _______ success.

A．a; 不填	B．a; the
C．不填; a	D．the; 不填

9 . Reading is ________ good habit. Stick to it, and you’ll make ________great progress.

A．a; /	B．a; a
C．the; a	D．/ ; a

10 . By _____ chance a friend of mine came across Jay Zhou in Taiwan, who has _____ gift for music.

A．a, a

B．a,/

C．the, a

D．/, a