What does the idiom “skeletons in the closet” mean?

1.Which of the following sentences uses the word “near” as an adverb?

2.Identify the part of speech of the word '$bravery^{\prime} in this$ sentnece: The firefighters acted with remarkable bravery during the airport blaze.

3.Identify the part of speech of the word '$Sinking^{\prime} in this$ sentence: The sinking ship was visible from the port tower.

4.Identify the part of speech of the word '$Alas^{\prime} in this$ sentence: Alas! The soldiers could not return from the battlefield.

5.Identify the part of speech of the underlined word:The students walked quietly through the corridor to their classroom.

6.The quality of the fruits, as well as the vegetables,

7.Each of the emergency exits

8.A group of bystanders ___ trying $\to stop the street fight before the police$ arrived.

9.The tension in the streets, along with several reports of vandalism, ___ the police chief and ___ an emergency meeting last night.

10.The mayor's new policy aimed \to ___ illegal street vendors, but many critics argued it would only ___ their economic hardships.

11.The authorities promised a ___ solution $\to the hawker$ crisis, yet their temporary actions proved ___ and inconsistent.

12.Many citizens viewed the eviction drive as ___ rather than just, since it disproportionately targeted those who were already ___.