Раскройте скобки, употребив глаголы в подходящей форме (Present Perfect либо Past

Раскройте скобки, употребив глаголы в подходящей форме (Present Perfect или Past Continuous)

1) Show me the dress which you (to make).
2) Oh, how dark it is! A large black cloud (to cover) the sky. I think it will start raining in a few minutes.
3) Oh, close the window! Look, all my papers (to fall) on the floor because of the wind.
4) When you (to open) the window? I (to open) it ten minutes ago.
5) The sun (not to rise) yet, but the sky in the east is getting lighter every minute.
6) I (not to work) very hard when I (to be) at University.
7) He was ill before Christmas, but he (to be) fine since then.