根据所给的句子,仿照例句用must或mustn't造句。 |
e.g. Never swim in the waterfall. You mustn't swim in the waterfall. 1. Never speak loudly in the library. ________________________________________________ 2. Never sleep outside at night in winter. ________________________________________________ 3. Don't play with fire. ________________________________________________ 4. Always do warm-up exercises before running. ________________________________________________ 5. Always wear sports shoes on Sports Day. ________________________________________________ |