Complete the sentences using the information in the brackets. Use the past perfect in negative sentences. Study the example.

Example:
At school, Jim quickly copied the homework that he ________________ (do).

At school, Jim quickly copied the homework that he had not done

Write only one option (one form).

1.  I saw him because he hadn't left
had not left (not/leave) for work.

2.  He didn't get the job because he hadn't sent
had not sent (not/send) all his papers in.

3.  The dog was really hungry. Mary hadn't fed
had not fed (not/feed) it since Monday.

4.  In the shopping centre I met a friend who I had not seen
hadn't seen (not/see) for ages.

**5.**The thief could walk right into the house because you had not locked
hadn't locked (not/lock) the door.