1 - Mice don't catch cats. Cats catch mice.2 - The Eath doesn't go round the Moon. The Earth goes round the Sun.3 - The river Volga doesn't flow into the Black Sea. The river Volga flows into the Caspian Sea.4 - Patients don't look after nurses in hospitals. Nurses look after patients in hospitals.5 - Water doesn't boil at 50 degrees Centigrade. Water boils at 100 degrees Centigrade.6 - Indians don't live in Scotland. Indians live in America.7 - Carpenters don't make things from metal. Carpenters make things from wood.8 - Our city doesn't stand on the river Thames. Our city stands on the river Moskva.9 - It doesn't often rain in Africa. It often rains in Mexico.10 - Tigers don't eat grass. Tigers eat meat.11 - Our group doesn't study Chinese. Our group studies English.12 - Our classes don't begin at 8 a.m. every day. Our classes begin at 8 a.m. five days a week.