$\text{1/ The door is opened by Nga.}$
$\text{2/ The table is set by us.}$
$\text{3/ A lot of money is paid by Jane.}$
$\text{4/ A picture is drawn by me.}$
$\text{5/ Blue shoes are worn by the students.}$
$\text{6/ You aren't helped by them.}$
$\text{7/ The book isn't opened by his student.}$
$\text{8/ The letter isn't written by you}$
$\text{9/ Grass is cut by my sister every weekend.}$
$\text{10/ Mr. Green's son is taken to the zoo by him.}$