I regret ______ to my head teacher,not listening to him.

Facts prove that the world’s economic development is not a win-lose game but one in which all ______ be winners.

____ you work, you must always serve the people heart and soul

I’m planning to hold a party in the open air, but I can make no guarantees because it________the weather.[ ]

It was three o’clock _______ he came back from work