我们可以在午餐时交换三明治。

We can ___swap sandwiches during lunch.

我们可以交换座位吗？我想坐靠窗的位置。

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

我们每周轮换做家务，这样大家都能分担。

We ___swap chores every week so everyone shares the work.