If water shortage weren't ________ problem in the area, there wouldn't be a need for ________ college graduates.A.a so big; so manyB.such a big; such manyC.such a big; so manyD.so big a; such many
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C解析考查such+a/an+adj. +n.（可数）或so+adj. +a/an+n.（可数）；So+many/much+n. [C]/[U]。