Yourclassroomissodirty.Everyoneshouldkeepit

问题详情：

Your classroom is so dirty. Everyone should keep it _______.

   A. dry                     B. open                         C. clean                      D. quiet

【回答】

C  clean作形容词，意为“干净的”，与dirty在意义上相反。

知识点：相似 相近词比较

题型：选择题