Rewrite the following sentences as illustrated through Examples I and II:
Ex. I : If you haven't good health, you cannot enjoy anything.
II : Unless you have good health, you cannot enjoy anything.
(a) If you do not follow the traffic rules, accident will occur.
(b) If you do not work hard, you cannot succeed in life.
(c) If the teachers do not attend the college daily, they won't get salary.
(d) If she doesn't study, she will fail in the examination.