20 —Why was __ you lost all your keys？—It was because of my carelessness

Mrs. White, when shall we go for a picnic—If it _____, we _____ for a picnic in the park tomorrow.

It was in 1945______ World War II ended.

The dodo became extinct fairly recently so its DNA is still ________

some restaurants, food and serviceare worse than ______ used to be