ça arrivera
I don't think that'll happen again.
Je ne pense pas que ça se reproduira.
How do you know that'll happen?
Comment sais-tu que ça va arriver ?
I certainly hope that'll happen.
J’espère vraiment que cela arrivera.
Tom and Mary say they don't think that'll happen today.
Tom et Mary disent qu’ils ne pensent pas que ça arrivera aujourd’hui.
Do you think that'll happen soon?
Tu penses que ça arrivera bientôt ?