请用“介词+关系代词”填空 Example: There stood the man for whom she had been looking. He took out a square green bottle, the content he poured into a dish. The goals he has fought all his life are all achieved now. An investigation was made into the accident, fifty people were killed. We need a chairman everyone has confidence. A survey was carried out on the death rate of the new-born babied in the region, the results were shocking. I am grateful to him for his advice, I owe all my success. This depends on the purpose nuclear energy is used. The time each control signal is sent is carefully controlled by a digital clock.