问题
选择题
After the accident, she had some difficulties _______ recalling what had happened _______ her.
A．on; to
B．on; on
C．in; to
D．in; on
答案
答案：C
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”。