Fill in the gaps with a, an or the and put a cross (x) where no article is needed.

Sima: People say that punctuality is (a)---- essential in human life. Can you tell me what (b) --- exactly punctuality is and why it is so important? Rima: Yeah, punctuality is (c)----  quality of doing things at the right time. It can bring every success in life. It's (d)----- important thing for students.. Sima: Right you are. (e)----  unpunctual student often fails in (f) -----exam. Rima: Exactly. We have to realize that punctuality is (g)---- unique quality and it is (h)------ important in every sphere of life.