2.1 Matching: 1. initial
2. investigation
3. to solve
4. to concern
5. witness
6. unbelievable
7. superintendent
8. remarked
9. tough
10. to belong
11. probably
12. assumption
a. incredible
b. presumption
c. to be the property of
d. observer
e. to relate
f. commented
g. almost certainly
h. beginning
i. to answer
j. strong
k. manager
1. examination