Сhoose the right word and insert it in the proper form search - search for - look for - seek
1. Sources of energy were … in nature: wind, sun, water, steam. 2. She was on her knees … her shoes. 3. The cop … the front of the car and told my father to open the trunk. 4. He can't just have disappeared. I mean, you … for him? 5. A good student … knowledge and experience. 6. It is advisable to … a good diagnosis and treatment. 7. They came to … work in the rich developing south.