三、Read and fill in the blanks. 在英语角，Lulu 给大家分享了她在学校阅览室的值日感受。请你读一读，根据材料内容完成句子，每空一词。

1. First, Lulu cleans the blackboards and Maomao cleans the .
2. Then, Lulu sweeps the floor and Maomao cleans the and chairs.
3. After that, Lulu and Maomao put back the together.
4. Finally, Lulu waters the plants and Maomao turns off the fans and .

1. windows 2. desks 3. chairs 4. lights

四、Think and say. 你平时值日会做哪些事情呢？请你想一想，并用英语说一说吧。
I'm on duty sometimes(有时). I often ... I can do a good job!

示例：I'm on duty sometimes. I often clean the blackboard, sweep the floor and tidy our desks. I can do a good job!

本题考查值日相关的基础英语情景表达，结合四年级已学的简单动词短语，列举日常值日常做的劳动事项补全句子即可，语句要通顺易懂，符合给出的句式逻辑。