attempts前面加什么介词

前面加介词to，例如：

1、The finding may also be relevant to attempts to control the spread of HIV.这一发现可能也与控制HIV传播的努力有关。

2、Mr Gaertner did not respond to attempts to contact him.记者试图联系高海纳，但他没有做出回应。

3、Additionally， public corporations may be subject to attempts by third parties to acquire control of the corporation against the will of management.此外，公众公司还可能遭受第三方违背公司管理层意志收购公司控制权的情况。