答案：填What subject dose
即：What subject does she like?
翻译：她喜欢什么学科?subject为什么不用复数?What应该改为Which吧一般情况下，what后面都用单数，除非是针对复数提问时，what后面用复数，如 What is your favourite subject? What class are you in? 其实用复数也不算错，也可以用复数，即 What subjects does she like?Chinese and art是复数啊嗯，这个应该用复数，刚开始我考虑有点欠缺。