把下列句子改成被动语态.

题目

把下列句子改成被动语态.
Do the workers bulid many buildings?
Does Kate sometimes break glasses?
Do you always send a letter to Mr Hu?
What does the teacher often tell the boys to do?
How many desks do they buy every term?

答案

1.Are many buildings built by the workers?
2.Are glasses sometimes broken by Kate?
3.Is a letter often sent to Mr.Hu by you?
4.what is the boys often be told to do by the teacher?
5.How many desks are bought by them every term?