We shouldn't throw the rubbish around the dustbin 我们不应该把垃圾扔在垃圾箱的周围。
We must wash our hands before we have a dinner. 我们在饭前应该洗手。
We mustn't play football in the park. 我们不应该在公园里踢球。
We must keep our classroom quite and clean. 我们必须保持教室的安静和干净。
Eating junk food is bad for our health. 吃垃圾食品有害健康。
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第1个回答 2019-03-20
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