bonjour une petite aide pour cette exercice merci

bonjour


a- The gangsters managed to get in easily because the owners had forgotten       to lock the back door before going on holidays.

b- My father went back home at lunch time because he had forgotten an               important file.

c- When Peter had finished reading Sandra's letter, he gave her a call.

d- Rockefeller had become the richest man in the world when he died.

bonne journée :)