B : Yes, but it fell so ___ below my expectation

------  far / much 중에 far이 답이던데 much는 왜 안되나요 ? 

2.A: Do we need to prepare anything for the first aid course? 

  B: No, the instructor is supposed to provide all of _______ we 'll need 

( equipment / equipments / an equipment / the equipment)

------------ 왜 the equipment 인가요 ㅜ ㅜ 

3. Analysts predict that between the two juices, consumers will prefer ___- has more health benefits.

( which / that / whomever / whichever )

------    which나 that은 왜 안되나요?  

4. The writers finished the articles, _____ not up until five minutes before the deadline.

            ( as / but / nor / any ) 

------- 이문제는 그냥 모르겟어요 ㅜㅜ 

5. Four zoologists in New Zealand have located the nest of a rare species of insect they _______ for 

since first observing the insect months ago.

( look / was looking / has looked / had been looking )

-------- had been looking인데 정확히 용법과 해석이 어떻게되나요? 현재완료 생각했는데 마땅치 않네요 ㅜㅜ 

너무 많은 문제 여쭤봐서 죄송합니다 ㅜ ㅜㅜ 

그리고 늘 친절히 대답해주셔서 감사합니다 !!