- What bird lifts heavy things? (什么鸟能举起重物?)
- What always goes up and never goes down?
- What makes naughty boys long to work in a clock factory?
- What kind of clothes lasts the longest？
- Does any child like going to school？
- How can you make the door last？
- Why can a bride hide nothing?
- How long can a goose stand on one leg？
- What common English verb becomes its own past tense by rearr
- What object has keys that open no locks, space but no room,
- Why do people go to bed？
- What letter do most people fear most？
- Why is a coward like a leaky faucet？
- Why should we never ask balloons for advice？
- What is heavier in summer than in winter?
- What clothing is always sad?
- How many legs do horses have?
- Which state in the United States is round at both ends and h
- What did the big chimney say to the little chimney while wor
- What comes before six?
- Who will be your real friend, a poor friend or a rich one?
- What color is the wind?