题目内容：

she is playing ＿＿ in the room.a.piano b.pianos c.the piano 选哪个为什...
she is playing ＿＿ in the room.
a.piano b.pianos c.the piano 选哪个为什么?

优质解答

C
play the piano 弹钢琴
弹拉乐器前要加 the
而球类运动前不加the, 如 ： play football 踢足球
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