Réponse :
a)
Did your parents buy their new car? (bought est faut car on il y a did)
b)
Did Walter visit Ireland last year (meme explication: on ne conjuge pas le verbe quand il y a did)
c)
In 1932 my ancestors weren't very rich (êtres pas avoir : riche)
d)
Was land in the west cheap in 1940 ? (êtres pas avoir)
e)
We didn't leave London last summer.
