George lost his pen this morning 变成一般疑问句

George lost his pen this morning 变成一般疑问句 His brother came here this morning.(改为一般疑问句） this is his green pen 改为一般疑问句 those are her keys 改为一般疑问句 Is this your pen Is this his pen?选择疑问句 It is his pen(改为一般疑问句) that is his green pen一般疑问句 This is his pen 改成一般疑问句 并做出肯定和否定两种回答 this is my pen.改一般疑问句 This is a pen.改为一般疑问句 this is pen?怎么改成一般疑问句 this is a pen改成一般疑问句 Tony went to school at six this morning.(变成一般疑问句)