Нужно 3 предложения с can, 3 предложения с could и 3 предложения с will be able to

С CAN:
I can go for a walk every day at 5 p.m.
Can I help you with such a tough task?
I can`t sleep because my dog is barking too loudly.

с COULD
I could swim when I was 5.
Could help me?
I couldn`t do my homework because I was in the hospital.

с to be able to
If I do my homework in an hour, I will be able to go for a walk.
He will able to do it but he won`t.
He`ll be able to do it in a month.