1) Mr Potter repaired / had repaired his car yesterday. 2) Our grandma baked / had baked a carrot cake by 6 o’clock yesterday.
3) He wrote / had written an article by Monday morning.
4) Tim and Betsy had been / were in Peru three years ago.
5) Did you water / Had you watered the flowers the day before yesterday?
6) John read / had read a book by Agatha Christie by the 1st of November.
7) My brother had flown / flew to Berlin last spring.
8) The children cleaned / had cleaned the flat before their parents