请把吸尘器插上电好吗？

Could you ___plug the vacuum cleaner ___in for me, please?

你需要把笔记本电脑插上电源充电。

You need to ___plug your laptop ___in to charge the battery.

这个设备是无线的，所以你不必总是把它插着电。

This device is cordless, so you don't always have to ___plug it ___in.