Question

All _ once the church clock struck 12

Answer 1

Answer:

All at once the church clock struck 12

Answer 2

All at once the church clock struck 12.

Explanation:

• Prepositions are words that govern and generally precede, a noun or even a pronoun and are used to express a relation to another word or element in the clause or sentence.

• Sometimes, particles which are words that look like prepositions but are actually a part of a verb can be confused with prepositions.

• "At" can be used as a preposition of time. For example: at night, at noon etc.

• "At" can be also used as a preposition of place (position and direction). For example: at the main door, at the playground etc.

• "At" can be used in sentences that require a reference to age. For example: She became a singer at 45.

To know more:

Wht is the difference between preposition and adverbs .. EXPLAIN wth examples

https://brainly.in/question/1085119