Answer:
C. so ...that
Step-by-step explanation:
The correct phrase to use in this sentence is "so exciting a game that," which means "such a exciting game that." The phrase "so exciting a game that" is correctly constructed because "so" is an adverb modifying the adjective "exciting," and "a" is an article indicating that "game" is a singular countable noun. The phrase "such an exciting game that" is incorrect because "such" is an adjective modifying the noun "game," and "an" is an article indicating that "exciting" is a singular countable noun. The phrase "such a exciting game that" is incorrect because "such" is an adjective modifying the noun "game," and "a" is an article indicating that "exciting" is a singular countable noun, but "exciting" should be "exciting" to be correctly constructed. The phrase "very exciting a game that" is incorrect because "very" is an adverb modifying the adjective "exciting," and "a" is an article indicating that "game" is a singular countable noun, but "exciting" should be "exciting" to be correctly constructed. Therefore, the correct answer is C.