Put the verbs in brackets into the past simple the present perfect or the present perfect continuous.

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(study) - I have studied for my exam all week.(eat) - I ate dinner an hour ago.(work) - She has been working on this project for a few months now.(clean) - He cleaned the house yesterday.(wait) - We have been waiting for the bus for over 30 minutes.(write) - She wrote a letter to her friend last night.(exercise) - I have exercised every day this week.(watch) - We have watched three movies since last weekend.