Перепишите предложения, исправив ошибки. 1. Mathematics are very difficult. 2. Our football team are winners. 3. There are many monkies in the tree. 4. The dishs are on the table. 5. My tooths are yellow. 6. How many womans are there in your company? 7. Are my shirtes washed yet? 8. Not many citys is clean and safe. 9. There is many problem in this exercises. 10. There are six librarys in our school.

Mathematics is very difficult. — неисчисляемое название предмета берёт глагол в ед. числе.

Our football team is the winner. — коллективное существительное в ед. числе требует is (вариант с are возможен в BrE, но здесь исправляем на стандарт).

There are many monkeys in the tree. — правильное множественное число: monkeys.

The dishes are on the table. — правильное множественное число: dishes.

My teeth are yellow. — неправильная форма мн. числа: tooth → teeth.

How many women are there in your company? — неправильная форма мн. числа: woman → women.

Are my shirts washed yet? — правильное множественное число: shirts.

Not many cities are clean and safe. — city → cities и согласование: мн. число → are.

There are many problems in these exercises. — мн. число: problems; указательное для мн. числа: these.

There are six libraries in our school. — library → libraries.