Topic 1: Increasing travels between countries enable people to learn different cultures or to increase tension between people from different countries

Knowledge + detailed, full, general, intimate, personal, public, scientific, specialist

Language + foreign, foul, improper, local, native, official, ordinary, second, spoken, written

Lifestyle + active, alternative, bizarre, comfortable, extraordinary, healthy, lavish, natural, new, outdoor, precarious, present-day, sedentary, simple, traditional

Mistake + big, costly, expensive, fatal, fundamental, great, honest, serious, terrible

Need + basic, desperate, educational, immediate, individual, particular, pressing, real, social, special, urgent