Prétérit ou base verbale

Yesterday, my parents ................... a new car.
1. buy
2. bought
What did you ................... for Peter's birthday?
1. buy
2. bought
Did you ................... your grandparents last Sunday?
1. visit
2. visited
What did you ................... during your scholl trip?
1. visit
2. visited
From two. to four in the afternoon, we ................... the Roman Baths.
1. visit
2. visited
Then we ................... to the theatre.
1. go
2. went
What time did you ................... back home?
1. go
2. went