Bonsoir, j’ai besoin d’aide pour cet exercice d’anglais, merci beaucoup!!!

4 Complétez par will (not), be + V-ing (to) ou be to.
a. Scientists ... (improve) our daily lives by develo-
ping robots.
b.Elon Musk ... (launch) a new project. It's in today's
newspaper
C. They ... (weigh) the pros and cons of Al in the
medical profession.
d. He... (change) his mind about AI.