Question

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.

Answer 1

Ответ:

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:

Answer 2

Here are the best answers for each sentence:

1. The police had investigated for days before they finally arrested someone. (Past perfect "had investigated" is appropriate because it indicates that the investigation was completed before the arrest.)

2. They had been dusting for fingerprints when they discovered the murder weapon. (Past perfect continuous "had been dusting" is appropriate because it shows an ongoing action in the past that was interrupted by another action.)

3. Gerry admitted that he had arrived home before his wife. (Past perfect "had arrived" is appropriate because it indicates the completion of Gerry's arrival before another action.)

4. Don said he had heard a strange noise just before the fire broke out. (Past perfect "had heard" is appropriate because it indicates that the hearing of the strange noise occurred before the fire broke out.)

5. The burglars had looked for something in the bedroom, and when they didn't find it, they came downstairs to search. (Past perfect "had looked" is appropriate because it shows that the search in the bedroom occurred before they came downstairs to search.)