问题描述：
I want that pair of sun-glasses.They are ____too expensive_____too cheap.A.either,or B.not only,but
I want that pair of sun-glasses.They are ____too expensive_____too cheap.A.either,or B.not only,but also C.neither,nor.D.not ,but
I want that pair of sun-glasses.They are ____too expensive_____too cheap.A.either,or B.not only,but also C.neither,nor.D.not ,but
问题解答：
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