I'm paying lots of money for you, so you'd better do well.
我为你花了那么多钱,所以你要好好干。
Don't cast out the foul water till you bring in the clean.
清水未来,莫泼赃水。
The guests had, of course, realized this from the moment Bessie opened the door for them and, long before the final catastrophe, had had a difficult time trying to conceal their amusement.