Children often quarrel and even fight with each other but it won't be long before they an

问题补充：

Children often quarrel and even fight with each other, but it won be long before they and play together.

A. turn up

B. show up

C. take up

D. make up

答案：

A. turn up

B. show up

C. take up

(答案→)D. make up

解析：A. turn up出现，露面，声音调大，B. show up出现，C. take up拿起，继续，接受（提议），占去，D. make up组成，补足，弥补，编造，和好，化妆，句意：孩子经常争吵甚至还打架，但是不久他们就和好了。所以选D。