ответ:It has been snowing all day
2) I have been studying
3) I’ve written them
4) I have been living here
5) I had received
6) the pan with soup has been boiling
7) Rachel has opened/had opened
8) Dan has just gone to the post office
9) I’ve been looking for it for one month
10) I’ve known Debora for ten years
Объяснение:
1.studying
2.wrote
3.lived
4.received
5.boiling
6.opened
7.just going
8.looking
9.know