exercise 2. put the verbs in brackets into the past perfect passive.
1. this guitar (tune) before i broke a string (струна) and had to tune it again.
2. this house (paint) pink before it was given a fresh coat of paint (свежий слой
краски). now it’s blue. 3. these bees (keep) in a large hive (улей) before they
were taken out and examined by the beekeeper. 4. this man (give) novocain before the dentist started working on a cavity (дупло (в зубе) that needed a filling.