3) list arguments: first of all, furthermore
give example: for instance
show contrasts: on the one hand
give a personal opinion: personally I think
introduce a conclusion: to sum up
4) a-4
b-3
c-1
d-2
e-4
f-4
g-1
6) 1-F
2-A
3-A
4-F
7) 1 - b
2 - d
3 - a
4 - c