No one ever told you which lectures to hear if you wanted to pass your exams; the grapevine took care of that, and you just followed the others who were in the same boat.
Walang isa pa na sinasabi sa iyo na lektura sa marinig kung kinakailangan upang pumasa sa iyong exams; ang grapevine kinuha ng pag-aalaga na, at ikaw lamang sinundan ang iba na ay sa parehong bangka.