They ______________ tired. The children _____________home late.

They are tired. The children come home late. (Present Indefinite).

They were tired. The children came home late. (Past Indefinite).

Negative.

They arent tired. The children dont come home late. (Present Indefinite).

They werent tired. The children didnt come home late. (Past Indefinite).

 Interrogative.

Are they tired? Do the children come home late? (Present Indefinite).

Were they tired? Did the children come home late? (Past Indefinite).

Special questions.

Who is tired? Where do the children come late? (Present Indefinite).

Who was tired? When did the children come home? (Past Indefinite).