题目内容：

Sheila isunderstood ------ won the first prize
A having B to have C to has D to have

优质解答

主语+be done +to do.是个固定结构,“,被,”如：He is said to be honest.据说他很诚实.当不定式的动作发生在谓语之前时,要用不定式的完成式,即to have done.He is said to have broken the glass.Sheila被理解为获...