1) she (come) already from school. now she is doing her homework. 2) what are you doing here? i (wait) for 2 hours. 3) we (solve) already the problem. 4) they (know) each other since their childhood. 5) we (sit) here for 25 minutes and i'm not going to wait anymore. 6) it (snow) for 2 days. 7) my father (never/be) to spain. 8) it is the most delicious cake i (ever/taste). 9) my parents (build) the house for two years. 10) you look exhausted! what (do)?
2have been waiting
3have already solved
4have known
5have been sitting
6has snowed
7has never been
8have ever tasted
9have been building
10what have you been doing?