试题题干
WORD FORMATION
Complete each of the following sentences with the proper form of the word in brackets.
Teachers and other specialists in early 
education recognize that children develop at different rates. (child)
参考答案
试题解析
此处缺少名词。
in后面可接名词作宾语。这里应该指的是早期儿童（幼儿）教育。所以变child为childhood，early childhood education：幼儿教育。
句意：教师和其他幼儿教育专家认识到，儿童的发展速度不同。