Ce qu'il faut faire, c'est réécrire les phrase que tu as complétées en les mettant a la forme négative, ça donne :
Yesterday, I didn't swim 100 meters in 51 seconds
Yesterday, my mother didn't visit London with my sister
On Mondays, I didn't walk to schol
Yesterday, Marc didn't jump on the table in class.
My parents didn't go to the cinema on Friday
Q. Elizabeth didn't open the Palace to the public
He didn't run very fast
I didn't like playing football
I didn't have an orange T-shirt
Voila ^^