В одной коробке 12 карандашей, из которых 2 простых, а остальные цветные. Сколько цветных карандашей в 10 таких коробках?

1) I have been viewing articles since 6 a.m.
2) He has been playing football since childhood.
3) She has been talking on the telephone for about an hour.
7) He has been thinking about her all day long.
9) We have been discussing plan of the work since 5 p.m.
13) It has been raining since morning today.
14) He has been living in London for 10 years. 
остальное сама, удачи)