我们可以交换座位吗？我想坐在窗边。

Can we ___swap seats? I'd like to sit by the window.

我经常和朋友交换书籍来看。

I often ___swap books with my friends to read.

我们交换了座位，这样她可以坐在窗边。

We ___swapped seats so she could sit by the window.