Giúp em mấy phần word form với ạ! A leader must be able to communicate ___ in order to be successful (effect) In order to improve ___, we need to buy a new machine (efficient) It was ___ that I did badly in the exam (disappoint) Our neighbors are very ___. They never care about other folks (consider) Speech ___ human beings from the animals (distinguish) They were ___ to learn that their son had not been injured in the accident (joy) We can not predict the ___ of earthquake (occur)

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