Passive Voice

I must do some ( MANY ) exercises, because I must do better my grammar.

This exercises are from: ego4u.com

1. Exercises on Passive ( form ):
1) In Present Simple :
a. The documents are printed.
b. The window is opened.
c. The shoes are bought.
d. The car is washed.
e. The litter is thrown away.
f. The letter is sent.
g. The book isn't read.
h. The songs aren't sung.
i. The food isn't eaten.
j. The shop isn't closed.

2) In Past Simple
a. The test was written.
b. The table was set.
c. The cat was fed.
d. The lights were switched on.
e. The house was built.
f. Dinner was served.
g. This computer wasn't sold.
h. The car wasn't stopped.
i. The tables weren't cleaned.
j. The children weren't picked up.

3) In Present Perfect.
a. The postcard has been sent.
b. The pencils have been counted.
c. The door has been closed.
d. The beds have been made.
e. The mail has been written.
f. The trees have been planted.
g. The money has been spent.
h. The room hasn't been booked.
i. The rent hasn't been paid.
j. The people haven't been informed.

4) In Future I.
a. The exhibition will be visited.
b. The windows will be cleaned.
c. The message will be read.
d. The thief will be arrested.
e. The photo will be taken.
f. These songs will be sung.
g. The sign won't be seen.
h. A dictionary won't be used.
i. Credit cards won't be accepted.
j. The ring won't be found.

2. Rewrite sentences in passive voice:
1) Present Simple:
a. He opens the door. - The door is opened by him.
b. We set the table. - The table is set by us.
c. She pays a lot of money. - A lot of money is paid by her.
d. I draw a picture. - A picture is drawn by me.
e. They wear blue shoes. - Blue shoes are worn by them.
f. They don't help you. - You are not helped by them.
g. He doesn't open the book. - The book isn't opened by him.
h. You do not write the letter. - The letter isn't written by you.
i. Does your mum pick you up? - Are you picked up by your mum?
j. Does the police catch the thief? - Is the thief caught by the police?