我用我的旧玩具和他交换了一本漫画书。

I ___traded my old toy for a comic book with him.

这家商店主要经营手工艺品。

This shop mainly ___trades in handmade crafts.

他用旧相机换了一台新电脑。

He ___traded his old camera for a new computer.

在幼儿园工作时，我们经常互换角色来照顾不同的孩子。

At the kindergarten, we often ___traded roles to take care of different children.