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

 
43.
 
Effective
 
+ 
action,  communication,  control,  deterrent,  interaction,  management, 
means, method, solution, treatment, use, way
 
44.
 
Efficient
 
+ 
management, manner, method, service, solution, use, way
 
45.
 
Emotional
 
+ 
abuse,  attachment,  development,  distress,  disturbance,  impact,  life, 
maturity,  need,  outburst,  pain,  power,  problem,  state,  stress,  support, 
trauma 
46.
 
Empty
 
+ 
bottle,  glass,  hand,  house,  lot,  place,  plate,  promise,  road,  room,  seat, 
space, stomach, street, word 
47.
 
Enormous
 
+ 
advantage,  amount,  change,  cost,  difference,  difficulty,  effort,  growth, 
impact,  importance,  influence,  interest,  popularity,  potential,  pressure, 
variety 
48.
 
Environmental
 
+ 
activist,  awareness,  benefit,  catastrophe,  change,  concern, 
consequence,  consideration,  control,  cost,  damage,  degradation, 

---

 
136 
destruction,  disaster,  factor,  impact,  improvement,  issue,  law, 
management,  matter, performance, policy, pollution, pressure, problem, 
project, protection, quality, regulation, standard, study