Question

There is ------ student called dev in my class.
i know ------- student you are taking about.

(a/an/the)​

Answer 1

There is a student called dev in my class.

I know the student you are taking about.

Answer 2

$\large\mathfrak{{\pmb{\underline{\orange{Your\:answer }}{\orange{:}}}}}$

There is $\sf\purple{ a}$ student called Dev in my class.

I know $\sf\blue{ the}$ student you are talking about.

$\bigstar \: \boxed{\sf{\color{red}{Hope\:it\:helps. }}}$