不定式to All that remains for me to do is to say goodbye.

问题

All that remains for me to do is to say goodbye.

这里的to say中的to可以省略吧？是必须还是可以？敬请老师解惑，谢谢。

老师答疑

陈老师：

其中的 to 可以省略，也可以保留。如：

All I did was (to) press the button. 我只是按了一下按钮。

What you have to do is (to) fill in the questionnaire. 你要做的是把问卷填好。

The first thing to do was to have a meal. 第一件该做的事是吃饭。

What you have to do is to choose a company to invest in. 你需要做的是选一家公司投资。

Our mothers sat us down to read and paint, when all we really wanted to do was to make a mess. 我们的母亲让我们坐下来读书和画画，而我们真正想做的却是打打闹闹。

All he needs to do is make one phone call and I’m a marked man. 他只消打一个电话，我就大难临头了。

All the newspapers really want to do is scoop the opposition.  所有报社真正想做的就是比对手抢先报道。