【简答题】Ellen Parker was worried about her health. She could not walk very quickly and it was difficult for her to climb stairs. She was soon out of breath. “I suppose I had better go to the doctor.” she thou...
【简答题】Mia’s father had a laboratory, but she had no idea what was in it. Her dad always closed and locked the door when he went in. She knew that he used it to do projects for work. He never told Mia what t...
【简答题】Ellen Parker was worried about her health. She could not walk very quickly and it was difficult for her to climb stars. She was soon out of breath (气喘吁吁). “I suppose I had better go to the doctor,” sh...