The four characteristics that all languages have in common are:

a pattern of
a collection of
a system of word
the elements of
grammer
order
words
sound

Pattern of sounds

a collection of words

a system of word order

the elements of grammar

Explanation:

Most languages share similar characteristics. Some attributes can be found in all languages. Four of these characteristics that all languages have in common are:

All languages have the attributes above in common. There are patterns of sounds that languages use in forming words.

A collection of words that form their grammatical concepts and a system of word order are all attributes that can be found in all languages.

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idk

explanation:

im not