$3-$ Singulier ou pluriel?

UNLIMITED ATTEMPTS LEFT

DUE January $21$st $11$:$59$ PM

Give the plural form of each singular noun and article and the singular form of each plural noun and article. Use definite articles from $1$ to $6$ and indefinite articles from $7$ to $12.$

Mod$$le un ordinateur des ordinateurs

articles d$$finis

$1.$

l$\text{'}$tudiant

des $$tudiants

$2.$

les amies:

des animaux

$3.$