I want some ( )to drink,please.

B
牛津高阶英汉双解词典

orange

/ ˈɔrɪndʒ; US ˈɔːr-; ˋɔrɪndʒ/ n
[C] round thick-skinned juicy edible fruit that is a reddish-yellow colour when ripe 柑橘; 橙: oranges, lemons and other citrus fruits 橙子、 柠檬和其他柑橘属水果 * [attrib 作定语]orange juice 橙子汁. =>illus at fruit 见fruit插图.
[C](usu 通常作 orange tree) evergreen tree on which this fruit grows 柑橘树: an orange grove 柑橘园.
[U] reddish-yellow colour of this fruit 橘红色; 橙黄色: a pale shade of orange 淡橘红色. =>illus at spectrum 见spectrum插图.
[U, C] (glass of a) drink made from oranges （一杯）柑橘饮料: Would you like some orange? 你要橘子水吗? * A fresh orange, please, ie real orange juice as opposed to orangeade or orange squash. 请来一杯鲜橙汁. * I'd like a gin and orange please. 请来一杯橙汁杜松子酒.

B.orange
橙汁 橙汁饮料 Would you like some orange?

应选B [不可数名词]，作‘橙汁’解释

详见牛津高阶词典第六版1212页

B选择的理由：这句话的意思是选一种饮料喝。只有B是饮料，意为橙汁。

选B
个人观点： 翻译过来是： “请给我一些橙汁”

B