1. Good morning,boy and girls. 早上好，男孩儿和女孩儿们。
Good morning,Miss Li. 早上好，李女士。
2. How are you? 你们好吗?
Fine,thank you. 嗯，谢谢。
3. Where is my ruler? 我的尺子在哪儿?
It's under the desk. 在桌子底下。