4．The police haven’t got enough i________ to catch the murderer.

3．The Internet now plays an important r______ in our daily life.

2．In the b_______ he did many small jobs to make a living, and later he became a millionair.

1．The s______ are changed during the interval (剧间休息).

25.　 Some of the American soldiers were not good at f_____ at night.

Unit 5

24.　 First he bought some vegetables, then washed them and f________ cooked a delicious dinner.

23.　 Los Angeles h______ the Olympics in 1984.

22.　 It is polite for you to s_______ hands with them when you meet the visitors for the first time.

21.　 Scientists and experts from many different parts of the country have come to this n________ conference .

20.　 Doctors advised us to eat more _______ (花生) because it is good for our health.