A.Don't talk in the library. |
B.Don't eat in class. |
A.Don't throw waste paper. |
B.Don't draw on the wall. |
A.Don't play football on the road. |
B.Don't pick flowers in the park. |
A.Don't eat a cake. |
B.Don't write on the book. |
A.Don't pick flowers in the park. |
B.Don't draw on the wall. |
A. | B. |