我想就这项服务提出投诉。

I ___wish to make a complaint about the service.

想了解更多信息的人可以访问我们的网站。

Those ___wishing to learn more can visit our website.

我写信给您是因为我想成为您俱乐部的会员。

I am writing to you because I ___wish to become a member of your club.