board上（车、船）   estimate估计    figured认为       imagined想象    meanings意思 mysteries谜       object物体     presented赠送      pronounce发音   stared盯着看 How life began on earth is one of the great of science. The word"spring"has several different and so does the word"ring". Billy at me in silence for nearly twenty seconds and then left without saying a word. Can you how many more days you will need to finish the book that you are writing? I could not believe my eyes. She was far more beautiful than I had . Ricardo always he could learn English well in six months, but he never really began his learning. Jane had to say goodbye to her friends when it was time to the train. Some students find it difficult to the word "thorough". One of the girl students a bunch of flowers to the professor who had just given a lecture on the mysteries of the English language. Look, there is a strange in the sky!