This is one of the most important inventions of this century.
Correct answer E. No correction required
Tip: press A, B, C or D to answer, and N for the next question.
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See allIf you are thinking about investigation overseas, isn’t it makes sense to find an experience guide?
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Had you been told me about your problem, I would have helped you.
Correct answer C. had you told
One of the most significant phenomenons of our time has been the development of cinema.
Correct answer B. phenomena
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