Trả lời:
Đáp án đúng: C
This question tests knowledge of using articles. In this case, we need to choose the appropriate article before the ordinal number "third".
- "No article": Not using an article. This case is incorrect because "third" is an ordinal number and usually comes with an article.
- "An": "An" is used before a word starting with a vowel (a, e, i, o, u). "Third" starts with a consonant, so it's not suitable.
- "The": "The" is used to refer to a specific or defined object. In this case, "third person" is not specific, but only an order.
- "A": "A" is used before a word starting with a consonant. "Third" starts with a consonant and it is an ordinal number, so "a" is the correct choice. It means "you are the third person to ask me that".
