they are doing some exercie —— a pe lesson

they are doing some exercie —— a pe lesson They are doing some exercise ______a PE lesson they are having a PE lesson.对 a PE lesson提问 they are (having a PE lesson.)对括号提问? What are they doing?用（a lesson) 回答 What are the __(policeman) doing?They are talking to some pe they are having a PE lesson now（对划线部分提问） At a PE lesson The students are having a PE lesson怎么提问 The students are having a PE lesson.(改为一般疑问句) We are have a PE lesson 改成疑问句是什么 They are having a Chinesd lesson .