Choose the option that best complete the gap. The clock _____ 12 o'clock two hours ago.
Answer Details
The correct option to complete the sentence is "struck".
The sentence implies that two hours have passed since the clock last struck 12 o'clock. Therefore, we need to use the past participle form of the verb "strike" to convey this meaning, which is "struck".
So, the complete sentence would be: "The clock struck 12 o'clock two hours ago."