31. "What's going on ? " inquired my wife, who generally collects the mail from the box by the back door . 32. The Senate vote sparked escalating protests to demand Estrada's resignation, culminating when he left the palace by the back door . 33. A wooden flower box filled with geraniums by the back door is the only sign that the house is occupied. 34. If you have kids coming in and going out, you can put a small base refrigerator by the back door , 35. Now, maybe that's not so bad, but it certainly needs some thought, and not just done by the back door . 36. Nick refuses assistance and leaves by the back door , while Bradley falls foul to a gas explosion, knocking him unconscious. 37. We cannot leave by the back door at midnight on the pretext that we have no security for our people, 38. While leaving the hospital by the back door , Rao said he would look into the complaints of the protesters, PTI said. 39. They keep them by the back door and slip them on over their socks when they go out into the garden. 40. "I've never in four years left anywhere in Hong Kong by the back door and I never will, " he said.