The children have some apples.(改为单数句子)

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Let's go _____(shop) with my mother!

已知一个梯形的面积是58平方厘米，它的上底是15厘米，下底是25厘米，它的高是多少厘米?

()“Do you want _____ orange?”“No ，I'd like _____ bottle of orange.”

swim_______ (现在分词)