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Choose the correct formal phrasing to complete the warning label on a bottle of heavily discounted, slightly suspicious magic potion.
________________________________ a sudden urge to bark at the moon, please drink a glass of milk immediately. Furthermore, __________________________________ your hair neon green, the manufacturer would not be held liable.
The correct answers are Should you experience and Were the potion to turn.
The first sentence pairs with an imperative ("please drink"), which acts like a first conditional. The inverted form of "If you should experience" is Should you experience. "Were you to experience" (second conditional) would incorrectly require a "would" clause.
The second sentence uses "would not be" in the main clause, marking it as a second conditional (hypothetical future). The correct inverted form of "If the potion were to turn" is Were the potion to turn. "Should" would pair with "will not be," and "Had" would pair with "would not have been."