Question

it was so nosiy here that i couldnot hear what y

u say 还是 said

Answer 1

it was so nosiy here that i couldnot hear what you __
say 还是 said

答案是：said
it was so nosiy here that i couldnot hear what you _said_
意思是：那时太吵了，我没有听清你说了什么。
理由,
本句主句从句都是过去时态，could not hear这一动作还在 say（said）动作之后，
所以前边的动作只能用过去时态，绝不可能用一般现在时态（导致逻辑冲突）。