Choose whether the main verb in the sentence below is active or passive.

experiments with chimpanzees revealed that the animals were able to imitate humans

The main verb in the sentence is active.

Explanation:

In most English sentences with an action verb, the subject performs the action denoted by the verb. Because the subject does or acts upon the verb, the sentences are said to be in the active voice. However, it is possible to change the order of words for the subject to be no longer active, but being acted upon by the verb or passive. In this case, the main verb is "revelead" and it is active.  The verb is not accompanied by any form of the auxiliary verb to be.

mailman is the most possessive answee

sing because that is what they are doing in the sentence

explanation:

the simple predicate is the main verb in the predicate that tells what the subject does. example: my father fixed the dryer. read each sentence. draw a line under the complete predicate.