Task 3 choose the best answer.
the police investigated / had investigated for days before they finally arrested / had arrested someone.
they had been dusting / dusted for fingerprints when they discovered the murder weapon.
gerry admitted that he had arrived / had been arriving home before his wife.
don said he heard / had heard a strange noise just before the fire broke out.
the burglars had been looking / had looked for something in the bedroom and when they didn’t find it, they came downstairs to search.
The police had investigated for days before they finally arrested someone.
They had been dusting for fingerprints when they discovered the murder weapon.
Gerry admitted that he had arrived home before his wife.
Don said he had heard a strange noise just before the fire broke out.
The burglars had been looking for something in the bedroom and when they didn’t find it, they came downstairs to search.
Объяснение: