9.I have just cleaned the floor.(P.P)
10.She hasn't been eating anything for 6 hours(P.P.C)
11.She has been studying for 4 hours.(P.P.C)
12.I have seen it twice already.(P.P)
13.has been teaching...(P.P.C)
14.Hasn't did...(P.P)
15.Has walked...(P.P)
16.Have been playing....(P.P.C)