5.
2)absolutely
3)absolutely
4)very
5)very
6)absolutely
6.
2) island
3) lake
4) forest
5)ocean
6) waves
7) volcano
8) coast
8.
2)a,b
3)b,c
4)a
5)b
4.
2) for a week
3) since 8 o'clock this morning
4)for 15 min
5)for 6 months
6)for 50 years
7) since we started school
8) since he was 8 years old