Shein a toy factory but now she has a shop of her own.A is used to workB was used to work

问题补充：

Shein a toy factory, but now she has a shop of her own.

A、is used to work

B、was used to work

C、used to work

答案：

解析：used to do sth 过去常常做某事，固定结构；句意：她过去在一家玩具公司上班，但现在她有了自己的店铺。故选C.