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

Enrich + experience, performance, relationship, life

Establish + business, creditability, link, network, relationship, reputation, rule

Examine + effect, evidence, implication, issue, nature, policy, problem, progress

Exercise + authority, care, choice, control, discretion, influence, judgement, option, power, responsibility, restraint, right, skill

Exhibit + behaviour, characteristic, degree, level, pattern, property, range, sign, symptom, tendency, variety, work

Expand + activity, base, business, capacity, horizon, operation, range, scope

Exploit + advantage, loophole, market, opportunity, position, possibility, potential, power, situation, technology, weakness

Explore + area, detail, idea, issue, nature, opportunity, option, possibility, potential, relationship, world

Express + anger, appreciation, belief, concern, disappointment, doubt, emotion, fear, gratitude, interest, opinion, preference, regret, satisfaction, support, sympathy, thanks, thought, view, wish