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)?

1has already come2have been waiting3have already solved4have known5have been sitting6has snowed7has never been8have ever tasted9have been building10what have you been doing?