帮忙变下被动语态!
1.We clean the classroom 2.People do not know Mark Twain as a great thinker.
3.Today people think it is one of the greatest books in American literature.
4.He made the kite when he was a little boy.5.They did not choose me this time.
6.They will piant trees tomorrow 7.We won not allow you to watch with our fans.
8.Jim has finished the work 9.Peole have used paper and printing for ages
10.We can keep information on CD-ROMs 11.Do farmers grow rice in spring
12.Did Tom defeated you last time 13.Will they ask us to play in the Olympic Games
14.When will they hold the match 15.Has he published the book yet
16.How can you finish the work in such a short time