问题补充：
(·高考江西卷)Mother always complains that childrentheir shoes very quickly.
A. find out
B. wash out
C. wear out
D. set out
答案：
A. find out
B. wash out
(答案→)C. wear out
D. set out
解析：选C。四个选项均为动词短语：find out意为“查明”；wash out意为“洗净”；wear out意为“用坏，突破”；set out意为“动身，出发”。句意：“妈妈总是抱怨孩子们很快就把鞋子穿烂了。”根据语境判断，此处用C项最为合适。
