Each of my friends a ... character (differ)

1.Each of my friends a ..... character.(differ)
2.My uncle often spends his free time doing volunteer work at a local ......(orphan)
3.Trung and his brother like ...... movies verry much(act)
4.Bell experimented with ways of trantsmitting ...... over a long distance.(speak)
5.Ly ..... demonstrated his invention.(success)