Give the correct verb form for each of the following. Use the active or passive form as required?

Give the correct verb form for each of the following. Use the active or passive form as required:

1. The Housing Authority (sell) over 100,000 flats under the Home Ownership Scheme by the end of 1987.

2. Angela (dress) so strangely that I could hardly recognize her when I met at the party.

3. A stranger asked me the way this morning but I did not know where the place was so I (tell) him to ask a policeman. After half an hour, when I (be) on my way, I saw the man again at the same place. It seemed that he had not found a policeman yet.