You should clean your desk before doing homework.

做作业前你应该清理书桌。

同一单元的其他句子

• Could you please take out the trash?请你把垃圾拿出去好吗？
• I need you to clean your room now.我需要你现在打扫你的房间。
• Could you please fold the clothes on your bed?请你把床上的衣服叠起来好吗？
• Don't forget to make your bed every morning.别忘了每天早上整理床铺。
• Could you please sweep the floor in the kitchen?请你扫一下厨房的地板好吗？