Complete the following sentence with a (compound) word derived from the one given in bracket.
It is no use（ ）over the mistakes you have made. (cry)
【正确答案】：CRYING
【题目解析】：
本题考查常见固定搭配的使用。
it's no use doing sth是固定句型，意为“做…没有用”，故此处应填cry的动名词形式crying。
句意：对自己已经犯下的错误哭泣是没有用的。