15) Your eyes are red. Have you cried?
16) Where on earth have you been? I have been waiting for so long!
17) Bill, you have got a black eye again, have you fought?
18) Do you think George has finished the translation? He has been writing for so long!
19) I think I can smell smoke on Debbie's clothes. I'm sure she has smoked.
20) Here you are! I have been looking for you everywhere. Where have you been?
