Teachers and nurses who deal with children are obliged to report cases of suspected authorities.
【正确答案】 C
【答案解析】解析:oblige“要求”,be obliged to是固定搭配,意为“必须,不得不”。remind“提醒,使想起”;expect“期望,预期”;request“要求”;compel“强迫,迫使”。由句意可知,此处应填与要求,义务责任有关的词语。故选C。