试题题干
Fill in each of the following blanks with a word or an expression.
The majority of linguistic expressions are in fact 
.
参考答案
试题解析
大多数语言表达实际上是任意的。
Fill in each of the following blanks with a word or an expression.
The majority of linguistic expressions are in fact .
大多数语言表达实际上是任意的。