Multiple choice

Which one of the following sentences is correct?

  1. I start school 9 o'clock

  2. I starts school 9 o'clock

  3. I start school at 9 o'clock

  4. I start school in 9 o'clock
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When referring to a specific time on the clock, the preposition 'at' is required.

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