How long have you been waiting?, For ten minutes, Bill is in the garden, He's been planting a tree all day, You've been studying all morning, Why don't you take a break?, Anne's been exercising a lot recently, That's why she's lost weight, It's cold outside, It's been snowing all day, Jenny's tired, She's been working hard all day, We've been practicing all afternoon, I think it's time to stop, What heve you been doing since I last saw you?, Lots of things. I've been busy

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