一、Where's the teachers' office?教师办公室在哪里？二、Do you have a library?你们（学校）有图书馆吗？三、It's 6 o'clock. It's time for dinner．六点了。

该吃晚饭了。

四、No，they aren't. They're ducks.不，不是。它们是鸭子。

五、Whose pants are those?那条裤子是谁的？