Choose the right tense (Present Perfect or Present Perfect Continuous).

1. They have traveled to Japan. 2. He has been playing soccer for two hours. 3. We have not eaten lunch yet. 4. She has been working on her thesis for several months. 5. I have seen that movie three times. 6. You have not finished your project yet. 7. They have been discussing the plan for a while. 8. He has not been playing video games all day.