用句中划线部分词的反义词填空，使句意完整。
1. The bag is too heavy. You are not tall. You should carry the________ one.
2. His coat is________. His mother wants to buy him a new one.
3. He says, "English is very interesting, but maths is________."
4. My ruler is long. But his ruler is________.
5. His father is very old. But he likes to play with ________ people.
