Difficulty: Easy
Correct Answer: a
Explanation:
Given data
Concept/Approach
With a singular countable noun beginning with a consonant sound (“wonderful”), use the indefinite article a.
Option analysis
a — correct: “a wonderful time.”the — specific reference; not intended here.an — used before vowel sounds; “wonderful” starts with /w/ consonant sound.one — numeral, unnatural in this idiom.
Final Answer
a
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