learned

[Unregistered]

Baby elephant learned to trumpet from its mother.
Baby elephant learnt to trumpet from its mother.

Which one of the above is correct. Can we use the word learned in place of learnt always.

Baby elephant had learned to trumpet from its mother.
Baby elephant had learnt to trumpet from its mother.

Which one the above is correct.

From Kavitha Mohan

 

[bhaisahab]

Baby elephant learned to trumpet from its mother.
Baby elephant learnt to trumpet from its mother.

Which one of the above is correct. Can we use the word learned in place of learnt always.

Baby elephant had learned to trumpet from its mother.
Baby elephant had learnt to trumpet from its mother.

Which one the above is correct.

From Kavitha Mohan

They are all correct.