Ex. 2
1) centre - core
2) extremely damaging - devastating
3) give out -
4) scared - intimidated
5) given responsibility for - entrusted with
6) difficult to believe - implausible
7) observation - surveillance
8) effect - issue
9) possibility - prospect
10) pollution - contamination
11) possibly - potentially
12) followed - ensued
Ex. 5
1 - f
2 - d
3 - e
4 - a
5 - b
6 - c
