how to use and when to use the words when making a conversation e.g listen and hear; talk and speak.?

Answer 1

"I would like to LISTEN to this C.D. If people would be quiet, I would be able to HEAR it."
"When I SPEAK I like to be LISTENED to." "It is polite to LISTEN when people speak."
Speak' & 'talk' can each, usually, be used in the same manner.
For example: Please do not talk - Please do not speak. Sometimes you would be more likely to use one rather than the other."
For example: "The lecturer gave a TALK on wildlife."
"The baby is not TALKING yet.""
A common saying is "speak only when spoken to.