题目内容：

1.The traditional approach to (deal)____with complex problem is break them down into smaller,more easily managed problems.
2.The man in the corner confessed to (tell)____a lie to the manager of the company.
分别是dealing 和 having told 我第一个想用原型 第二个想用现在完成时

优质解答

approach to ； confessed to 中的都是介词.