题目

动词填空用括号中所给动词的适当形式填空。I 【1】 (be) an English teacher now and I started 【2】(study) English by myself when I was about 15 because of Michael Jackson. He 【3】 (be) my idol since 1991, and I really wanted to understand him and his music. I used to use a dictionary 【4】 (learn) the meanings of the songs written by him.There was a lot of work 【5】 (do)to learn English, but I never gave up. At first, I learned about pronunciation, which was the hardest part for me. Because music was my only source(来源)of studying English, sometimes I 【6】(ha一个正多边形的中心角为20°，则它是正________边形．