1.
Letters
were sent yesterday.
2.
The
keys will be found tomorrow.
3.
The
cheese is cut with a knife.
4.
The
present was brought to my birthday.
5.
A
mouse was caught by a cat.
6.
Books
were taken by students in the library.
7.
An
ice-cream is eaten by a child.
8.
The
castle was built before the Great War.
9.
This
picture is drawn by Picasso many years ago.
10.
A
new vase will be bought on Sunday.