1. Why are people tired on April Fool's Day?
2. What weather do mice and rats fear?
3. When do dogs refuse to follow their masters?
4. What question can never be answered by "yes"?
5. What tree is always very sad?
6. When can you get water with a net?
7.What question is that to which you must always answer "yes"？
8. Where were you when the power was cut Off?
9. When is a blue book not a blue book?
10. Why is a calendar so popular?
1. Because they have just had a long March.
2. When it's raining cats and dogs.下大雨。
rain cats and dogs下大雨。
3. When their masters go to the flea market.主人去跳蚤市场时。
4．Are you asleep?你睡着了吗？
6. When water is turned into ice.当水结成冰时。
7."What does Y-e-s spell?"（当别人问你）¨yes¨怎么拼？
8.In the darkness.在黑暗中。
9. When the book is red.与read同音。
10. Because it has a lot of dates.因为它里面有很多约会。date日子、约会。