Questions
1. How are trees, cars, and elephants alike?
2. What part of a watch was used before by someone else?
3. Why can a frog jump higher than a tree?

Answers
1. They all have a trunk! trunk有3个意思，一个是树干，一个是车子后面的行李箱，还有象鼻的意思。
2. The second hand. 二手货和秒针都是同一个词：the second hand。
3. Because a tree can't jump. 树本来就跳不动啊！