Ответ:
You must always do your homework.
You must wear a uniform.
You must be polite to your teachers and classmates and respect them.
You mustn't mob you classmates.
You should keep classrooms clean.
You must listen carefully at lessons
1. A. The sounds of a violin <span>are heard in the hall.
2. This book </span><span>was bought a week ago.
3. The cake </span><span>had been bought yesterday by my wife.
4. We </span><span>shall be met by Tom at the station.
5. The guest room </span><span><span>is being washed and cleaned</span> now.
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