Chuyển sang câu bị động
1 Chuyển sang câu bị động
a, we have cleaned the front door->
b, they have not caught the thieves yet->
c, no one has signed this letter->
d, Mr. Snow hasn't taught that course since 1975->
e, they have set up an investigation to look into the tragedy->
f, they showed his photograph on television->
g, my father is painting my house and these cars for tet->
h, Students are doing a lot of work->
i, your teacher will help you->