根据提示填空(每空一词)
My friend has to clean the classroom after school today.(对加粗部分提问)
____ ____ your friend ____ ____ ____ after school today?
答案
What,does,have,to,do

根据句意,对“clean the classroom”提问,要用特殊疑问词“what”;在一般现在时中,含有have to的特殊疑问句,需要借助助动词do或does,have to用原形。此句中,由于主语是第三人称单数your friend,所以要用does。

略
