The square box has a door,there are some buttons.

I didn’t invite him to the party but he came anyway and got completely drunk. –__________he hadn’t come! The party could have been a success.

My father________hungrywhen he was young.

History is the best teacher. It ______recordsthe development path of each country and foretells the future to us.

Depression is very common in modern society. ________ 1 in every 33 children may have depression; in teens, that number may be ________ 1 in 8.