将主动语态改为被动语态 1 The students sweep the classroom every day.

1 The classroom is swept by the students every day.2 A terrible voice was heard by her last night.3 Their task will be finished tomorrow.4 It is said that she would write a poem for her parents.5 Expe...谢了还有呢 6the workers were building a new school last year.7 he was eaten the fish .8 he had pointed out a few small mistakes in my papers.6 A new school was being built last year.7 The fish was eaten by him.8 A few small mistakes in my papers had been pointed out by him.