1.David has already left the party.
2.I haven't received his letter yet.
3.Has the manager come to the office yet?
4.We have already seen that film.
5.Laura hasn't found a job yet.
6.Has it already stopped raining?
7.He has already drunk three bottles of beer.
8.We haven't heard anything from them.
9.Have you posted the letter yet?
10.They have already gone to Brazil.