№1
1 vote in an election
2 earn a salary
3 make sense of something
4 take place
5 an optical illusion
6 a labour force
7 a trick of the light
8 a rural area
#2
1 labour force,earn a salary
2 flying saucer-an optical illusion-a trick of the light
3 make sense of
4 vote in an election-take place
5 rural area