试题题干
Fill in each of the following blanks with a word or an expression.
The 
-word stage begins around the age of a year.
参考答案
试题解析
单词阶段大约在一岁时开始。
Fill in each of the following blanks with a word or an expression.
The -word stage begins around the age of a year.
单词阶段大约在一岁时开始。