1) it s the first time she (выбрать вариант ответа has failed или failed) the exemination in Maths
2) nobody (выбрать вариант ответа has proved или proved) this theory yet
3)in 2014 she (выбрать вариант has taken или took) part in the Olympics
4)(выбрать вариант Did you ever see или Have you ever seen) an aviation engine
5) They are still experimenting. The experiment (выбрать вариант didn t finish или hasn t finished) yet

ниёля1 ниёля1    1   14.05.2020 16:58    5

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