填空；根据括号中所给的汉语写出单词，使句子意思完整正确。
1. Too (多) homework often leads us to studying late into night.
2. Surprisingly, new research shows that most people are more (相似) to their fathers.
3. As the old saying goes, (三月) is the best time to visit Yangzhou.
4. Qingtuan is a traditional Qingming snack for people living (南方) of the Yangtze
River.
5. Your room is always in a (混乱) , Bennie. Why not clean it right now?