increase * annual * orbit * commence If something happens once a year, it is this kind of event. Earth has one of these, and Mars has one, too. You do this when you begin doing something. To go faster, you must do this to your speed.
increase * annual * orbit * commence The Harvest Festival is an ______ event that our town celebrates in October. Each planet’s ________ takes it around the sun. Thousands of fans waited for the baseball game to _______. Don’t ________ the amount of sugar in the recipe, or the pie will be too sweet.