Ответ:

  1. General question: Were Mike and Jess walking in the park at 5 o'clock last evening?
  2. Special question: Where were Mike and Jess walking at 5 o'clock last evening?
  3. Alternative question: Were Mike and Jess walking in the park or in the garden at 5 o'clock last evening?
  4. Tag question: Mike and Jess were walking in the park at 5 o'clock last evening, weren't they?
  5. Question to the subject: Who was walking in the park at 5 o'clock last evening?