Вставьте is или are.
1. Many books .... published in Russia.
2. The cars.....tested by the police.
3. I......always driven to work by my father.
4. The machines...... tested before used.
5. These gates......painted every year.
6. His car......polished every week.
Answers & Comments
2.are
3.am(помоему)
4.are
5.are
6.is