Our football team led ______ one point, but towards the end of the game, their team scored and the game ended ______ a tie.

We have heard of many cases _______  some citizens ，especially some famous people， have suffered because personal information had been leaked.

　　　　--- Playing table tennis.

I firmly believe _____ he said at the meeting was right.

With temperature ________ so rapidly, we could not go with the experiment.