you should know Helen ,she is _____ most unusual gir in our school

问题描述:

you should know Helen ,she is _____ most unusual gir in our school
用 a还是the

当然用the,应为这个句子不仅仅是比较,而是‘最’
翻译:你应该知道海伦,她是我们学校最奇特的女孩.