________ foreign guests e to our school for a visit every year and we exchange ________ information about education．A.A large number of; plenty ofB.A great deal of; a lot ofC.A plenty of; a great deal ofD.A great many of; lots of
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A解析a number of后接可数名词，a great deal of后接不可数名词，plenty of, a lot of和lots of可接可数或不可数名词。