23.24.25

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23.24.25

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10086100 共回答了19个问题 | 采纳率89.5%: 23、(Have) they (been swimming) since 3 o'clock?
24、(Where have) you (been staying) for two weeks?
25、She (had been practicing) playing the piano (for two hours).
若有问题请追问,谢谢~~; 1年前

asdyang 共回答了55个问题 | 采纳率: 将楼上的修改一下：（仅供参考，呵呵！）
Have they been swimming since 3 o'clock?
Where have you been staying for two weeks?
She 【has】 been practicing playing the piano for two hours.; 1年前

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