简答题4.I did not know the way to my hotel because I asked a policeman. I did not know the way to my hotel, so I asked a policeman.简答题6.She went into my room and she saw all those books on the floor, so she got a big surprise. She went into my room and got a big surprise when she saw all those books on the floor.简答题1.There were a great many loud explosions and the race began. After a great many loud explosions, the race began.简答题14.We all have secrets, but we do not want even our closest friends to learn. We all have secrets which we do not want even our closest friends to learn.简答题10.As the plane was late, detectives were waiting at the airport all morning. The plane was late and detectives were waiting at the airport all morning.简答题11.Since nearly everybody enters for the competition each year, Linda wins every time. Nearly everybody enters for the competition each year, but Linda wins every time.简答题8.He opens the gate from the outside as soon as he comes into the garden and waits until the gate shuts. As soon as he opens the gate from the outside, he comes into the garden and waits until the gate shuts.简答题7.The weather was very hot for he carried the bed on to the roof of his house. Because the weather was very hot, he carried the bed on to the roof of his house.简答题5.A smiling policeman told him and his bicycle had been found. A smiling policeman told him that his bicycle had been found.简答题2.I had the breakfast and I sent the children to school. After breakfast, I sent the children to school.简答题12.When he smiled, he remembered his hard early years and the long road to success. He smiled when he remembered his hard early years and the long road to success.简答题3.I returned home but it was still early. It was still early when I returned home.简答题13.The animal has been sent to a museum, so it is being examined by a scientist. The animal has been sent to a museum where it is being examined by a scientist.简答题9.Over the years, the crash was forgotten when the wreck remained undisturbed. Over the years, the crash was forgotten and the wreck remained undisturbed.简答题15.Advertisers discovered years ago and all of us love to get something for nothing. Advertisers discovered years ago that all of us love to get something for nothing.