We should keep it in mind that beneath our feet ______ that our life depends on for food and clothing.

To us, a miss is ___________a mile. We can’t afford to make any mistakes.

ryone knows, the SouthChina Sea is __________ part of China, __________ important part of China, anyother country outside Asia doesn’t have __________ say in thisissue.

He regrets such a terrible mistake.

We are supposed to ___________a solution to stop people from looking down at their mobile phones while driving cars.