At school we must ..listen to the teacher and ...do well what the teacher says to us and answer the teacher's questions...
We must wear a school uniform at school.
We must 't ..be late for school... and we mustn't miss the lessons...
We mustn't talk to our friends at the lessons and we mustn't run and make noise during the break. We mustn't litter at school.
В школе мы должны слушать учителя и делать хорошо всё то, что говорит учитель, и отвечать на вопросы учителя.
Мы должны носить школьную форму в школе.
Мы не должны опаздывать в школу и мы не должна пропускать уроки...
Мы не должны разговаривать с друзьями на уроке и не должны бегать и шуметь во время перемен. Мы не должны мусорить в школе.
Has he graduated from our university last year or this year?
Shall we go to Samara or St. Petersburg next week?
Are they working in our or their garden?
Have you just read this book or this notes?
Did you take this book from your friend or your parents?
Does he like reading or writing books?
Has she relatives or parents abroad?
Were they in many or few countries?
Is Russia the largest or the smallest country in the world?