2.got/had already bought
3.had already studied/moved
4.entered/ha already begun
5.played/finished
6.sent/had met
7.had not had/arrived
8.called/had answered
9.had found/went
10.had paid/left
11.lost/had got
12.went/had eaten
13.reached/had already left
14.landed/had already arrived
15.resited/had failed