Hard work was what caused Jill's success. (put) -> Jill's success can ………………… hard work.
Hard work was what caused Jill's success. (put)
-> Jill's success can ………………… hard work.
Hard work was what caused Jill's success. (put)
->Jill's success can be put down to hard work.
put down to - put sth down to sth - think that something is caused by something else
breathe