Guess the teachers!

Teacher A:
"There will be SPA at (this date), so don't be ed-some."
"For skill D, you need to ana-nalyse..."

Teacher B:
"Okays nows, those who fails NAPFA stay behinds. The rest of yous, go and runs four rounds."

Teacher C:
"I'll be giving you a comprehension paper to do... come on! Say yes! Enthusiasm!"

Teacher D:
"Recurrrrrrrrrrrence relations..."

Teacher E:
"pH is equals to FOUR-teen (*voice crack*)... ahem, sorry."
"The pK_a is equals to the pK_b. Wow, isn't it amazing? What a coincidence!!"
"A buffer is a solution containing a weak acid and... its... salt of a strong conjugate base, or a weak base and... its... salt of a strong conjugate acid."