1.Had been - Would have gone
2.Would have bought - Hadn't sold
3.Hadn't failed - Would have lent
4.Had told - Wouldn't have arrived
5.Would have been - Had read
6.Wouldn't have hurt - Hadn't dropped
7.Had used - Wouldn't have cut
8.Had celebrated - Would have brought
9.Would have taken - Had run
10.Hadn't forgotten - Would have given
chsuc em học tốt!!!!!