You seem to have every kind of verb form present in this selection. I'm going to list them all and what they do.
being blind: It is a participle and it is a participle phrase. But is it an adjective?
was is a linking verb for the main clause. It is not a candidate at all.
set is the predicate of the subordinate clause beginning with except not a candidate.
stood second main clause predicate verb.
gazed a verb form for the main clause.
had died. Main clause verb. Not the answer.
having been long enclosed is close. Unfortunately it is a gerund phrase which is an object of a preposition (from). It likely is the second best answer.
hung main clause verb.
found main clause verb
The rest don't matter they are linking verbs or main clause verbs or subordinate clause verbs.
The only one you really could choose is being blind. It describes street.
Answer:
Past perfect tense.
Explanation:
Supposing that the italicized verb is <u><em>had gone</em></u>, then the tense is past perfect tense.
This past perfect tense is an action that has happened sometime in the past but before something new has happened. In the sentence, the word "gone" is the third form of the verb, thus making it a past tense. Then, the use of the word "had" which is the past tense form of the verb "to have" shows it is the "perfect" form of the verb.
Thus, the whole sentence "<em>Your sister had gone when we arrived.</em>" is in the "past perfect tense".
Answer:
Getting clean air to breathe and clean water is a necessity to human beings, whereas having personal freedom is not.