I have run out of the salt. I need to buy some now.A. run out B. run of C. used up

问题补充：

I have run out of the salt. I need to buy some now.

A. run out B. run of C. used up

答案：

解析：句意：我已经将食盐用完了。现在我需要去买一些。分析：(something) run out :某物用完了，指物； (somebody) run out of (something)某人用光了某物；use up 两种表达方式都可以。故选C