Answer:
1 but
2 unless
3since
4 when
5 if
6 and
7 than
8 while
polo deserve to succeed _but_he will work harder.
he will not graduate _unless_he will study harder.
he will not complete the course _since_ all the subject are open.
polo said he will get the certificate_when_ he will pass the requirements.
he has to strive more _if_ he want to reach his goals.
he might lose his chance to graduate _and_ he wasn't able to submit his portfolio.
not graduating is more frustrating _than_ failing a grade in subject
submitting all the projects _while_ passing all the written outputs will ensure high ratings.
