IT'S A RULE, SO EVERYONE ...STRICTLY FOLLOW IT.A. DOESN'T HAVE TO...

5. - Đề thi môn: Tiếng anh
Tiếng Anh Đề thi môn: Tiếng anh
5. It's a rule, so everyone ...strictly follow it.A. doesn't have to B. shouldn't C. has to D. should