Present Perfect or present perfect progressive?

1)Colin, you (miss) already very many classes.
2)It's 11 p.m. . I (work) on the computer since six and I (finish, not) yet.
3) I always (want) to make a tour of Spain.
4) The telephone (ring) for almost a minute. Why doesn't someone answer it?
5) They (build) their house for a year and a half.