单选题After the accident  she&n

问题补充：

单选题Aftertheaccident,shehadsomedifficulties_______recallingwhathadhappened_______her.A.on; toB.on; onC.in; toD.in; on

答案：

C解析have difficulty (in) doing sth.意为“做某事吃力、费力”；happen to sb.意为“发生在某人身上”。