1) Which sentence is correct? a) She has been study English all morning. b) She has been studying English all morning. 2) What have they been doing? a) They have been playing football. b) They has been play football. 3) Which sentence is correct? a) I have been studying for three hours. b) I have been study for three hours 4) Have you been studying English for a long time? a) Yes, I have been studying English for three years. b) Yes, I study English yesterday. 5) Has she been working on the project since Monday? a) Yes, she worked on it tomorrow. b) Yes, she has been working on it all week. 6) Which sentence is correct? a) They have been playing football all afternoon b) They has been playing football all afternoon.

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