Question

an army of ants is seen by us​

Answer 1

Answer:

An army of ants were seen by us.

Explanation:

Cambridge English Dictionary defines 'active voice' as 'the relationship between a subject and a verb in which the subject performs the action of the verb, or the verb forms which show this relationship.'

The given sentence is in active voice.

Active Voice : We saw an army of ants .

Cambridge English Dictionary defines 'passive voice' as 'the relationship between a subject and a verb in which the subject receives the action of the verb, or the verb forms which show this relationship.'

The given sentence, when converted to passive voice, is :

Passive Voice : An army of ants was seen by us.