参考答案:Is your teacher sweeping the flower now?
只要是含有助动词的句子,比如be动词,就把助动词提到前面就行了,因为助动词是可以左边一的。习惯上我的变成你的。另外,flower应该是floor,表示清扫地板。Is your teacher sweeping the floor now?
Is your teacher sweeping the flower now?
is提到句首来