be totally focused on your objective—USA — already well established in 1932—originated in the image of God’s watchful eye upon the sparrow, with reference to the gospel of Matthew, 10:29-32
USA, 1883—exclamation of surprise at seeing something or somebody unexpected—alludes to a hunter who will lament seeing all sorts of game when he goes out into the woods and fields without his gun
alludes to a British cavalry charge in 1854 during the Battle of Balaclava in the Crimean War—the phrase has had a variety of meanings, depending on the acceptation in which ‘charge’ has been used
with allusion to food served up on a slice of toast—1877 ‘to have someone on toast’: to have someone at one’s mercy—1886 ‘to be had on toast’: to be cheated
USA, 1957—a fateful day that brings disaster—alludes to ‘Bad Day at Black Rock’, the title of a 1955 U.S. thriller film by John Sturges, starring Spencer Tracy
UK, 1882—to remain motionless and quiet; to keep a low profile—probably from ‘dog’ and suffix ‘-o’, with allusion to the characteristically light sleep of a dog