读一读,选择正确的标语。
⑴They are talking in the library. A. Keep to the right.
⑵He is drawing on the desk. B. Take turns.
⑶They are drawing in the classroom. C. Talk quietly.
⑷We are playing games in the park. D. Work quietly.
⑸They are walking on the stairs(楼梯). E. Keep your desk clean.