Past simple vs. Present perfect

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
1. He the doctor yesterday.
2. She from a serious headache, but after treatment, she felt better.
3. Our living conditions over the last few decades. Now people live much better.
4. The doctor her. Fortunately, the treatment is working.