Вставьте, где это необходимо, артикль : a / an, the.

1. My mother is ( ) doctor. She is ( ) good doctor.
2. These are ( ) flowers. ( ) Flowers are very beautiful.
3. ( ) Milk is very useful for children. ( ) Milk is hot.
4. I`d like to go to ( ) Bolshoy Theater and ( ) Historical Museum.