We have been decorating our house since five o'clock. He has been reading the book for three hours. Carmen has been working on the project since morning. I have been waiting for him for several hours. She hasn’t been reading your letters since January. I haven’t been teaching English since 2011. He hasn’t been skiing in the mountains for a month. We haven’t been painting the walls for a long time. Has the dog been barking for more than an hour? We haven’t been painting the walls for a long time?
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