Letters

I asked my British pen pal to send me his favorite puzzles, but the ones he sends are so cryptic! Are these even crossword clues?

Cut Guidaben from ABCs, with energy in middle [5]

Character in the Talmud [5]

Canadian interjection starts Funke's largest paper [5]

Sound of the Avatar playing a chord [8]

Drop second half of ABP 201 / ENGR 325 class [3]