在下列各句中的每个空格内填上一个适当的、完整的单词或短语。

1. Children under 1.2 m in _____ (高度) take the train freely in this country.

2. —How much is the book?

    —It cost ______ (至少) three dollars.

3. As everyone knows, water _____ (结冰) at the temperature of zero degree centigrade.

4. Sam is a good teacher with lots of ______ (经验) in teaching.

5. Your composition is good _______ (除了) for some spelling mistakes.