Please pick up the . Don’t keep it on the floor.

Excuse me, could you tell me the way to the post office— Go the bridge the river, and walk the shop. It’s on your right.

Could you give us an account about the big fire?—OKIt was a Friday evening _______the fire broke out and ten persons were killed in it

Thank you for your help and I hope I can dosomething for you_____

Such a chance, once ________， might never come again[ ]