He passed the examination in the first class because he .....
A
was hard-working for it
B
worked hardly for it
C
had worked hard for it
D
was working hard for it
Correct Option:
C
Explanation
He passed the examination because he had worked hard before the result occurred. The past perfect neatly places the hard work before the later past event, "passed." Also, beware: "hardly" means "scarcely", not "with great effort."
