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Complete the student's confession to their study buddy by choosing the correct options for each gap.
"I ___________________________ to write this history essay since 9 AM, but I _______________________________ two sentences because my cat keeps sitting on my keyboard."
"I have been trying to write this history essay since 9 AM, but I have only written two sentences because my cat keeps sitting on my keyboard."
Use the Present Perfect Continuous (have been trying) to emphasize how long an activity has been happening.
Use the Present Perfect Simple (have only written) to emphasize how much or how many things have been completed so far.