Who __the battery-operated slippers invented __?Julie Thompson.A was by B were by

Who __the battery-operated slippers invented __?Julie Thompson.A was by B were by Who __the battery-operated slippers invented __?Julie Thompson.A was by B were by battery battery battery Who __the boy and the girl? battery 是什么 cmos battery low battery battery是什么意思? low battery battery spacer low battery battery是什么意思 battery is BATTERY POWER PHONE BATTERY怎么样 Do you know who __the first Chinese to walk on the moon?是用was还是用is 好呢? Who __the South America in the history?A:found B:found out C:looked for D:discovered