Answer:
8
Explanation:
the lesson taught by the teacher should be copied by the student
The correct answer is a.: specific.
This structure (this +adj) requires an adjective and the only adjective is in a., the other options are verbs or nouns and are not correct.
You Laughing, Or if you say it someone else, them laughing, or if you say "Ha, Your laughing in a teasing way then it would be making fun of there laugh