We clean the classroom every day. 我们每天打扫教室。
The classroom is cleaned by us every day. 教室每天都由我们打扫。
Such songs are usually sung by girls. 这些歌通常是女孩子们唱的。
Russian is not taught in our school. 我们学校不教俄语。
Are many goods shipped abroad every day 每天都有许多货物运往国外吗