1) I have been chopping onions.
2) They have been discussing it.
3) I have been thinking about it a lot.
4) l have been selling it for a month.
5) I have been working here sincel came to this town.
6) He has not been working.
7) Has she been working ?
8) I have been raning.
9) She has been singing.
10) They have been meeting.