How long has she been going out with him?, What have the children been doing? doing it?, It has been raining., How long have you been having it?, I have been trying to speak with my sister for days., She has not been sunbathing.., Bonnie has not been studying medicine., The baby has been throwing his food., Max has been playing football in the rain., How long has she been saving to buy a house?,

present perfect continuous

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