机器人销售工程师招聘:We must listen to the teachers.(改一般疑问句）

We must listen to the teachers.(改一般疑问句） We must ask a doctor to come. We must ( )to school at seven thirty. we must try our best. For we belong to ourselves We are going to listen to the tap.是什么意思？ We often listen to her sing.怎么变被动？ We must submit ourselves to God's will. we must try our best. For we belong to ourselves and we have We must be prepared at any time to join the army to ___ our motherland. So we must obey .........