1. So far no one has been able to account for the cause of the accident.
A) assess
B) explain
C) describe
D) investigate
2. All those present noticed the minute change in his look.
A) big
B) timely
C) dramatic
D) slight
3. The war was over, but the whole country was in a state of disorder.
A) confusion
B) disagreement
C) disappearance
D) disaster
4. The young man was accused of theft in the supermarket.
A) arrested for
B) charged with
C) praised for
D) described as
5. The cause of the fire is being investigated.
A) looked after
B) looked through
C) looked forward to
D) looked into
6. Numerous attempts have been made to hide the truth.
A) Many
B) Successful
C) Effective
D) Unsuccessful
7. It is obvious that there is difference in the way they view the matter.
A) natural
B) certain
C) inevitable
D) clear
8. It is odd that so little is known about the talented painter.
A) surprising
B) unreasonable
C) strange
D) unbelievable
9. Everyone in the class participated in the farewell party.
A) contributed to
B) took pleasure in
C) took part in
D) enjoyed
10. Since ancient times people have found various ways to preserve meat.
A) carve
B) cook
C) freeze
D) keep
11. To understand what we are going to talk about today, you have to rely on what you have read previously.
A) beforehand
B) carefully
C) before
D) in advance
12. At the policeman's signal, the vehicle pulled up.
A) stopped
B) slowed down
C) sped up
D) turned up
13. Not everyone can perceive the gradual change in the writer's style.
A) appreciate
B) notice
C) describe
D) discover
14. It was said that after his father's death, he possessed nearly half of his father's wealth.
A) wasted
B) owned
C) purchased
D) sold
15. They all agreed that the changes that have taken place are substantial.
A) significant
B) superficial
C) inadequate
D) inevitable