单选题 Sometime the 3-year-old child has trouble______fact from fiction.
  • A. separating
  • B. to separate
  • C. having separated
  • D. for separating
【正确答案】 A
【答案解析】[解析] have trouble+动名词(doing)sth．表示做某事有困难。B，C，D选项均不符合题意。