Question

the dog was____ heels​

Answer 1

the dog was upon heels.

What is Preposition?

A preposition is a word placed before a noun or pronoun to show the relation between the noun or pronoun & some other word in a sentence.

There are 5 kinds of preposition:

• Simple Preposition: in,of,an,off,to,up,with,at,by,etc.

• Compound Preposition : Without, within, outside, inside, into, behind, beneath, across, between,etc.

• Double Preposition : Outside of, out of, from out, from behind, from beneath etc.

• Participle Preposition :Notwithstanding, concerning, pnending, etc.

• Phrase Preposition : By means of, because of, on account of, instead of, behalf of etc

Answer 2

Answer:

The dog was at his heels.

Explanation:

at is a preposition to tell the accurate position of particular point.