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Берем предложение <span>China imported a record amount of Russian crude last month и преобразуем в следующие видовременные формы:
</span>Present Simple
China imports a record amount of Russian crude monthly.
<span>Present Continuous
</span>China is importing a record amount of Russian crude these days.
<span>Present Perfect
</span>China has imported a record amount of Russian crude this month.
<span>Present Perfect Continuous
</span>China has been importing a record amount of Russian crude for two years.
<span>Past Simple
</span>China imported a record amount of Russian crude last month.
<span>Past Continuous
</span>While <span>U.S. President Barack Obama was seeking to encourage Chinese criticism of Russia on Ukraine, </span>China was importing Russian crude.
<span>Past Perfect
</span>When U.S. President Barack Obama sought to encourage Chinese criticism of Russia on Ukraine, China had already imported a record amount of Russian crude.
<span>Past Perfect Continuous
</span>When world leaders gathered in The Hague to discuss nuclear security issues, China had been importing Russian crude <span>for two years</span>.
Тут нужен аудиофайл с заданиями. Надо внимательно слушать что говорят и записывать