Question

He set out _____ six o'clock ?

• A. at
• B. in
• C. on
• D. from

Answer 1

Answer:

A. at

• The preposition "at" is used to specify a particular point in time.
• "In" typically refers to a period of time, such as "in the morning" or "in the afternoon," rather than a specific point in time. 
• "On" is often used with days of the week or dates, such as "on Monday" or "on January 1st." 
• "From" indicates a starting point but doesn't specify the time itself.