That might have been the craziest party ever! which identifies the linking verb?

"have been" is the linking verb. If you can only choose one word, choose "been".

Explanation: Linking verbs connect the subject to the predicate (a predicate is a phrase that says something about a subject). So, here, the predicate would be "the craziest party ever", because it's referring to "that" in the sentence. The linking verb phrase, "have been", connects the subject "that" to the predicate noun, i.e. "the craziest party ever". Different forms of the infinitive verb "to be" are linking verbs, which also helps to determine the answer here, since "have been" is the past perfect tense of "to be".

My source, an excerpt from Merriam Webster:

Definition of linking verb

: a word or expression (such as a form of be, become, feel, or seem) that links a subject with its predicate

Examples of linking verb in a Sentence:

//“Look” in “you look happy” and “are” in “my favorite fruits are apples and oranges” are linking verbs.

1. read the following excerpt from franklin d. roosevelt's "fireside chat 19":

on the other side of the picture, we must learn also to know that guerilla warfare against the germans in, let us say serbia or norway, us; that a successful russian offensive against the germans us; and that british successes on land or sea in any part of the world strengthen our hands.

remember always that germany and italy, regardless of any formal declaration of war, consider themselves at war with the united states at this moment just as much as they consider themselves at war with britain or russia. and germany puts all the other republics of the americas into the same category of enemies. the people of our sister republics of this hemisphere can be honored by that fact.  

the true goal we seek is far above and beyond the ugly field of battle. when we resort to force, as now we must, we are determined that this force shall be directed toward ultimate good as well as against immediate evil. we americans are not destroyers — we are builders.

analyze the effectiveness of this excerpt. how does it function within the speech as a whole? how does the structure of the excerpt to convey the speech's purpose and key points? support your argument with evidence from the speech. (10 points)