急!将下列句子改成被动语态,帮忙!
急!将下列句子改成被动语态,帮忙!
1 we have finished all the work
2 he has worked out all the porblems
3 the people make history
4 people asked him a lot ofquestions at the meeting
5 we heard him singing in the next room
6 i saw the thief ebter the building
7 people say he is honest