“Sad hurts but it's a healthy feeling.”

explain the line

Sad does hurt. We all know when something tragic happens, you feel sad.

But its a healthy feeling. This sentence means that the sad event happened for a reason. Suppose you got 60% in marks, you feel sad. This usually happens because you have not studied well and is a wake up call for you that you need to work harder.

Explanation:

i don't think so because different teachers have different materials. tehy teach differently, unless you know for sure your teacher is the exact same as others. i would just contact ur teacher