Вставьте нужную форму глагола to be 1.mathematics…very difficult. 2. our football team…winners. 3. there…many birds in the tree. 4. the dishes…on the table. 5. my teeth…white. 6. how many students … there in your group? 7. … my shirts washed yet? 8. not many cities…as big as moscow. 9. there…many problems in these exercises. 10. there…two libraries in our university.

1.Mathematics is very difficult. 2. Our football team is a/the winner. 3. There are many birds in the tree. 4. The dishes are on the table. 5. My teeth are white. 6. How many students are there in your group? 7.Are my shirts washed yet? 8. Not many cities are as big as Moscow. 9. There are many problems in these exercises. 10. There are two libraries in our University.