将下面的句子变成否定句和疑问句，并做出回答
第一，Our monitor has come back.
否定句：Our monitor hasn't come back.
疑问句：Has our monitor come back？
回答：Yes ,he has./ No, he hasn't.
monitor [ˈmɒnɪtə]n.（高年级学生担任的）导生;班长;显示器;显示器;监听器;监听器;水枪（用于消防）;巨蜥属动物;水枪（用于挖矿）;浅水重炮舰;vt.监控…的运行（或性能）;监测;监听;监测;
第二，We have finished our exercises.
否定句：we haven't finished our exercises.
疑问句：Have you finished your exercises？
回答：Yes, we have./ No ,we haven't.
第三，SHe has bought us some envelops.
否定句：She hasn't bought us some enveiops.
疑问句：Has she bought us any enveiops？
回答：Yes ,she has ./No ,she hasn't bought us any.
第四，I have read the True Story of Ah Q.
否定句：I have never read the True Story of Ah Q.
疑问句：Have you ever read the True Story of Ah Q？
回答：Yes, I have./ no ,I haven t.
第五，They have begun to get in harvests.
否定句：They haven't yet begun to get in the harvests.
疑问句：Have They already begun to get in the harvests？
回答：Yes ,they have ./No ,they haven't.
第六，Theyhave carried all the rice bundles to the village.
否定句：They haven't yet carried the rice bundles to the village.
疑问句：Have they already carried all the rice bundles to the village？
回答：Yes, they have./ No ,they haven't.