Choose the option that best completes the gap(s) Ade was told to finish the assignment ____ time.

1. Analyze the question The sentence is: "Ade was told to finish the assignment ____ time." We need the preposition that forms a correct, natural phrase with "time."

2. Explain the concept Several English phrases use "time" with different prepositions, and each has a different meaning:

• on time means punctually, at the scheduled moment, not late.
• in time means with enough time to spare, before it is too late.
• at time(s) is not used alone. We say "at times" (sometimes) or "at the time" (then).
• by time is not a standard phrase. We say "by the time" (a conjunction) instead.
• with time is only used in the sense of "as time passes," as in "with time, you will understand."

3. Step-by-step solution

• The instruction is to finish the assignment according to the deadline, meaning punctually.
• Option A, "on time," fits: "Ade was told to finish the assignment on time."
• Option B, "with time," does not fit the meaning of a deadline.
• Option C, "at time," is ungrammatical here.
• Option D, "by time," is incomplete. It would need "by the time" followed by a clause.

4. Answer The correct option is A. on.

5. Tip Remember: "On time" = punctual, "In time" = just before it's too late. For example: "The bus left on time, and we reached the airport in time for our flight." JAMB often tests this pair, so watch for it.