用所给词的适当形式填空。Salt, used to, tradition, no
题型：填空题
问题：
| 用所给词的适当形式填空。 | |
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| 1. The traffic here is very ______for children. 2. I didn’t like him ______much when we were at school. 3. The water became very ______in the Aral Sea. 4. There are ______fish in the river. 5. London is______ than Los Angeles. |