Берем предложение China imported a record amount of Russian crude last month и преобразуем в следующие видовременные формы:Present SimpleChina imports a record amount of Russian crude monthly.Present ContinuousChina is importing a record amount of Russian crude these days.Present PerfectChina has imported a record amount of Russian crude this month.Present Perfect ContinuousChina has been importing a record amount of Russian crude for two years.Past SimpleChina imported a record amount of Russian crude last month.Past ContinuousWhile U.S. President Barack Obama was seeking to encourage Chinese criticism of Russia on Ukraine, China was importing Russian crude.Past PerfectWhen U.S. President Barack Obama sought to encourage Chinese criticism of Russia on Ukraine, China had already imported a record amount of Russian crude. Past Perfect ContinuousWhen world leaders gathered in The Hague to discuss nuclear security issues, China had been importing Russian crude for two years.