Questions translation
1_What does mean 如一日in this sentence?
并且几年如一日地照顾他。
2_What does mean this sentence?
为他不知找了多少家医院，并且几年如一日地照顾他。
3_ can you please tell me more about the meaning of 暗暗in this sentence?
评委听了暗暗点头。
4_What does mean 究竟in this sentence?
他们就走出来看个究竟。
5_ What does mean this sentence?
6_What does mean 究竟in this sentence?
他们就走出来看个究竟。

Question

Questions translation
1_What does mean 如一日in this sentence? 
并且几年如一日地照顾他。
2_What does mean this sentence? 
为他不知找了多少家医院， 并且几年如一日地照顾他。
3_ can you please tell me more about the meaning of  暗暗in this sentence? 
评委听了暗暗点头。
4_What does mean 究竟in this sentence? 
他们就走出来看个究竟。
5_ What does mean this sentence? 
6_What does mean 究竟in this sentence? 
他们就走出来看个究竟。

Answer

1“几年如一日”can be translated into "keep doing something for a longtime just like doing it in first day"
2为他不知找了多少家医院， 并且几年如一日地照顾他。 
(she) took him to many hospitals and kept taking care of him for a long time
3评委听了暗暗点头。
“暗暗”means he agreed with it in mind but didn't show it on his face.
4他们就走出来看个究竟。
“究竟”here means 'what happened'or 'what's the situation''