【单选题】To use the machine, first ___ the correct coins, then select the drink you want and press the button.
【单选题】To use the machine, first the correct coins, then select the drink you want and press the button.
【单选题】To use the machine, first __ the correct coins, then select the drink you want and press the button.
【单选题】To use the machine, first the correct coins, then select the drink you want and press the button.
【单选题】To use the machine, first the correct coins, then select the drink youwant and press the button.
【单选题】To use the machine, first the correct coins, then select the drink you want and press the button.
【单选题】Use the button to _____________on different selections.