I'm talking ___ the phone ___ my mother.

I'm talking 【 on 】 the phone 【 with 】 my mother.
不明白的再问哟,请及时采纳,多谢!Listen! Jim _____ in his room.My mother often goes to the _____ to shop.Listen! Jim 【 is singing 】 in his room.My mother often goes to the 【 supermarket 】 to shop.