Question

Which alternative completes the sentence below correctly? I know that is A or B, but Why????


When I think back, I realize that many things I _____ ______ when I was a child are very clear to me today. When I see that my son ______ ______ the same things, I wonder if the _______ _________ then in the fature.
a)Didn't / understand/ doesn't/ understand/ will/ understand
b)wasn't/understanding/isn't/understanding/will/understand
c)Don't/understood/don't/understand/would/understand
d)Didn't/understood/doesn't understand/won't/understood

Answer 1

a) When I think back, I realize that many things I didn't understand when i was a child are very clear to me today.

b) When i see that my son doesn't understand the same things, I wonder if he will understand then in the future.