Are these two sentences correct?

I have already prepared a couple of exercises that needed to be printed. I have been told that they should be given to the reprography at least 5 days in advance.

Question

Are these two sentences correct?

I have already prepared a couple of exercises that needed to be printed. I have been told that they should be given to the reprography at least 5 days in advance.

Answer

".. need..."

Answer

I would say "taken to the reprography center", but the rest seems okay!

Answer

I have prepared a couple of exercises that need to be printed. I have been told that they should be given to the reprography atleast 5 days in advance.

The second part of the sentence is correct😊

집에서 편안하게 언어를 배울 수 있는 기회를 놓치지 마세요. 경험 많은 강사진을 살펴보고 지금 바로 첫 수업을 신청하세요!