I have been studying ____ two hours. She has been working ____ morning. They have been cleaning ____ . We have been practicing ____ . He has been waiting ____ noon. We have been painting the house ____ three days. I have been exercising ____ 7.00am. The students have been studying for their exams ____ a month. We have been rehearsing for the concert ____ .

Time Expressions - Present Perfect Continuous

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