Being on your own feet

1.Due to sb/sth : because of sth/sb

Ex : he had to work due to his high cost of university.

2.How come : why

Ex: how come did you buy that car ?

3.On hand : available

Ex: a job is on hand in a very large company.

4.Stand on one’s feet : to be independent and able to pay your costs

Ex: he wanted to stand on his feet so he tried to find a half time job.

Learn by a short story :

As he was accepted in a university , he tried to stand on his feet.He found it quit hard due to the job search in last month . He understood there’s no way he could get a job , he’d rather stop looking for a job . he was depressed,but suddenly saw job position on hand on an ad in local paper . he thought that maybe he could finaly get a job and how come he was so sure about it . he went there and got hired at the end for a half-time and well-paid job.