can, will be able to

[Sitifan]

1. He lost a leg in the accident. But with a new artificial one, he ___ walk again.
(A) can (B) will be able to
2. I'm hard-of-hearing but if I get a deaf-aid I ___ hear everything people say.
(A) can (B) will be able to
What are the answers to the above questions?
_________________
Thank you very much for your reply.

[Barb_D]

With #1, it could be either. It's not clear whether he already has the new leg, or may be getting one.

With #2, although you'll no doubt hear "can" -- the use of the "if" leads me to use "will be able to."