I take a lot of exercise and am very fit 中的am为什么是对的?

I take a lot of exercise and am very fit 中的am为什么是对的? I am an art student and I paint a lot of pictures中为什么paint 用 I am tired and have a lot of headaches是什么意思 英语翻译I am a professor of sports and exercise so I often deal I am very b----- this evering.I have a lot of homework to do I am very sorry < >you such a lot of trouble by the delayed l am doing M_ exercise,and I want a computer 1 tired,i,am,i,and,have,lot,of,a,headaches 2 must,try,eat,me tired,I,am,I,and,have,lot,of,a,headaches怎么连词成句 英语翻译I am an art student and I paint a lot of pictures.Many p 英语翻译you like sports a lot ,and i am fond of sports,too.i oft I am very clever a boy还是I am a very clever boy?哪种说法对?为什么?