Bonjour
1- This spider has attacked 65 people since 1987.
.............. ..has been attacking....................
2- The box jelly has stung 64 people since my sister was born.
3- There have been 7 deaths since they allowed swimming in this area.
4- I haven't seen a shark since I stopped surfing.
5- That dog hasn't bitten anyone since I bit hime.
ou/ That dog hasn't been bitten anyone since I bit him.
(to bite/bit/bitten)
en général = present perfect - since - preterit
je ne connais pas vos exos précédent mais ou tu mets present perfect simple
ou present perfect continous = have + been + participe present (je le rajoute en-dessous chaque phrase là où ça me semble possible. Choisis en fonction de tes cours....
bonne nuit/journée :)
