分类：教育/科学-外语学习-英语考试
问题：Theweatherissochangeable.Idon'tk? 
The weather is so changeae.I don't know______A.how to wearB.why to wearC.what to wearD.when to wear为什么
回答：选C.
I don't know what to wear. “what to wear”做的I don't know的宾语，“what”做的是“wear”的宾语，因为wear是及物动词，是必须要带宾语的，如：wear a hat/a pair of shoes/glasses。