alter

我们不得不改变一些计划。

We've had to ___alter some of our plans.

为了去看演出，我们需要改变一下日程安排。

To go to the show, we need to ___alter the programme.

他为了通过考试，偷偷修改了考试成绩单。

He tried to ___alter his exam transcript to pass the test.