1.We feel sorry ... Sam because he hasn039;t got any friends

1.We feel sorry ... Sam because he hasn't got any friends
a) for b) about c) with d) by
2. We ... a new computer two weeks ago.
a) had bought b) was bought c) bought d) have bought
3. He was sorry that he ... to me for so long.
a) didn't write b) haven't been writing c) hadn't been writing d) hasn't been
writing
4. When was this building finished? - They say it ... by the end of last year.
a) had been finished b) was finished c) will be finished d) finishes