—Timmy, it is raining heavily out. Shall we stop here?—_______, we must finish this work today.

_____ I had done it I knew I had made a mistake.

I shall certainly not tell him the news. ________, it will go to his ears sooner or later. 

Make sure to turn off the gas after you take a bath, which would ___ cause danger.

— Excuse me, where does Tom live? — He lives _____ to the train station.