根据所给中文或首字母写出相应单词的正确形式。 1. When I began to sing, he laughed and made me e____________. 2. He said that he p_________ to stay at home rather than go with us. 3. He has been practicing these days, in p______________ for the match. 4. The club is for t______________ who are between 13 and 19 years old. 5. Mr. Tang enjoys writing. His works have e__________ him many good friends. 6. We are kept i___________ of what is happening in the world by reading newspapers and watching television. 7. I’ve tried, but I can’t open the door _________（无论如何）. 8. The tall man _______（弯腰） forward to listen to the little girl. 9. The center has over 300 scientists _____________(致力于) to doing research into DNA. 10. Taking weight-loss pills proves to be dangerous, as it _____________(包含) some chemicals which cause one’s liver to fail.