Use - able to / unable to (or) Remove - can / could - can't / couldn't

friends in this video I have explained about 'able to' and unable to' how to use it in your own sentences. and what will be the formulas and also rules about removing can or could listen

carefully and practice regularly.
If you are having any suggestion please put a message in the message box.
this grammar part is very useful for the students from 5th standard to 12th standard of all Wings. It may be State Board, CBSE, ICSE, competitive exams or any other.

unableRemovecould