- - -What should we do next? - - -Here are some vegetables. We have to.A .mix up them B. c

问题补充：

- - -What should we do next?

- - -Here are some vegetables. We have to.

A .mix up them B. cut it up C. cut them up

答案：

解析：句意：我们下步该做什么？这儿有一些蔬菜。我们得把他们切碎。Mix up混合，cut up切碎，这两个短语都是由动词加副词构成的，代词宾语一定要放在两词中间。Vegetables是复数名词，可用them代替。所以选C。