I,tohether with my classmates,were going to the -- I ,together with my classmates,was ...( 因为主语是 I) ( the 和 a 都是冠词,去掉a)
After we got to there ( as soon as we got there,最好用as soon as一..就,get there到那,there副词前省略to )
and it looks clean again - and it looked clean again( 时态一致,用 looked)
and we all felt quite happy - but we all felt very happy 根据前面的we were very tired,用 but 但是,表转折