能不能帮忙看下哪里出错误了复制到http://validator.w3.org/check这个网站说有4处错误比较急，下周3就要交了，希望各位大人帮下忙about dogs.htmlAbout dogs Dog, a kind of common mammal. It is usually called “the most faithful friend of human beings”.Its life is approximately 10 to 30 years.---------------------------------------------------"Are we lovely?"
" alt="dog1"/>
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">about dogs.htmlAbout dogs Dog, a kind of common mammal. It is usually called “the most faithful friend of human beings”.Its life is approximately 10 to 30 years.----------------------
