The answer is the first option, "We have been chosen."
The present perfect tense is characterized by the usage of the words "have [verbed/verben, etc.]." However, since this sentence must also be in the passive voice, we must act accordingly. Instead of "We have chosen," the sentence now reads as "We have <em>been</em> chosen."
Hope I could <em>have been</em> of assistance!(See what I did there?)
Thoreau mostly uses imagery to illustrate time in the excerpt. The second sentence is saying that he is in the midst of time/living, and he can "detect how shallow it is," meaning that he is aware that life is short and that the end is inevitable. Thoreau also describes time as being fleeting, but ever-present.
I hope this helps!
The answer is totally man vs man<span />
The correct answer is: [C]: "future" .
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Note the: "will" in front of the verb, "produce". This indicates the "future tense" ; as in something "will" happen (i.e. "at a later time").
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