Step 1 : Introduction to the question "9. Please complete the expression used in England "People in glass houses (or greenhouses) shouldn't throw_________"?"
...1. rocks 2. the baby out with the bath water 3. bricks 4. stones Clearly if you are in a glass house throwing stones is not a good idea, is it? More generally do not do or say something that might in turn reverberate back onto you. English and the culture of England are so simple aren't they?