Choose the best option A, B, C or D to complete each of the sentences from 21 to 39. In some countries, on moral ______ that education should not be taxed, there is no tax on books. A.idea B.principle C.reason D.concept
Đáp án đúng: B Giải chi tiết:Idea= ý tưởng, Principle= nguyên lý, reason= lý do, Concept= quan niệm. Cụm từ cần nhớ: “ Moral principle”= nguyên lý đạo đức.