Fill in each gap with a suitable conjnuctions whereas, unless, since, before, if, even though, unless, while, before, if

Fill in each gap with a suitable conjnuctions whereas, unless, since, before, if, even though, unless, while, before, if
Question 81. ________Kien is my friend, I can’t accept his arrogance.
Question 82. My brother is a book worm, ________ I don’t like reading books.
Question 83. At midnight, my parents were sleeping________I was cramming for