1I was worried that I would flunk the math test if I didn't study harder.
2Do you think you will flunk the English exam if you don't practice your reading skills?
3She did not want to flunk her driving test, so she took extra lessons.
4If you don't pay attention in class, you might flunk the final exam.
5There are many students who flunk their first year of college because they are not used to the coursework.