

task 2:
1. c
2. a
3. f
4. e
5. d
6. b
task 3:
1. take
2. worry
3. help
4. free
5. hand
task 4:
1. thank
2. know
3. -
4. like
5. talk about or present
6. firstly or at first
7. secondly, I think
8. then
9. -
10. prepared
task 5:
1. for
2. into
3. of
4. on
5. on
6. to
7. to