I’ll be ready to leave _ about twenty minutes:

A. is
B. in
C. until
D. to

🧠 Explanation:

In “I’ll be ready to leave in about twenty minutes,” ‘in’ is correct. Knowing this helps students improve English grammar, ensuring clear sentences. Understanding prepositions is useful for essays, exams, or conversations in school. This skill is key for English classes, helping students express timing accurately. Learning correct grammar enhances communication, making it easier to convey plans in academic projects or daily scenarios where precise language improves clarity.