Question

Select the correct pronoun to fill in the blank. Have you and ______ known each other for very long? he him

Answer 1

Pronouns are words we use in the place of a full noun

Have you and he known each other for very long?

It's a subjective pronoun thus we can apply he in the blank to correct the sentence.

Here for the sentence, the past participle verb Known has been used without an auxiliary verb. Thus we can change as using past simply as knew

Thus we can change the sentence as :

Have you and he knew each other for very long?