Group (E F) - Spelling Practices

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(1) n. (Эхо) sound reflected from an opposing surface and repeated to the ear; repetition of a sound
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(2) n. Syn. skyscraper(здание) building, especially one of imposing appearance or size; a structure that has a roof and walls
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(3) a. Syn. detailed; complicated(разработки) marked by complexity and richness of detail; done with care and in minute detail
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(4) a. Syn. forever; everlasting(вечное) forever; being without beginning or end; existing outside of time; infinite
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(5) n. Syn. substitute(обмена) substitute; trade in; give in return for something received
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(6) n. (волнение) state of being emotionally aroused
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(7) a. Syn. single; sole; incompatible(Эксклюзив) not divided or shared with others; excluding much or all; not allowing something else
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(8) v. Syn. investigate(изучить) investigate systematically; examine; search
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(9) a. Syn. fictitious(сказочный) related in fable; devised; invented; not real
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(10) n. Syn. imitation; counterfeit; false(поддельные) imitation; counterfeit; having a false or misleading appearance