- - -There is something wrong with my car. Could you help me?A. fix it up B. clean it up C

问题补充：

- - -There is something wrong with my car. Could you help me?

A. fix it up B. clean it up C. fix up it

答案：

解析：句意：我的车子有点问题。你能帮我修理吗？fix up修理，安装；clean up打扫；这两个短语都是由动词加副词构成的，后跟代词宾语时必须放在两词之间。所以选A。