A.Don’t litter. | B.Don’t walk. |
A.No food. | B.No parking. |
A.No smoking. | B.Don’t talk. |
A.No cameras. | B.I’m sorry. |
A.Open your book. | B.Take out your book. |
A.No climbing. | B.Don’t walk. |
A.Don’t litter. | B.Don’t worry. |
A.Open your book. | B.Close your book. |
A.严禁吸烟。 | B.严禁饮食。 |
A.No climbing. | B.No smoking. |