Tuantuan is bigger than Yuanyuan.怎样改为一般疑问句

Tuantuan is bigger than Yuanyuan.怎样改为一般疑问句 Shanghai is bigger than Beijing.改为一般疑问句 My hands are bigger than hers.改为一般疑问句 The hippo is bigger than the horse.变成一般疑问句 nancy is older than him(改为一般疑问句) John is older than his classmates.(改为一般疑问句） Jim is younger than John改为一般疑问句 she is taller than her brother.改为一般疑问句 The sun is heaxier than the Earth (改为一般疑问句) She is thinner than Lucy.改为一般疑问句 His bag is heavier than hers.改为一般疑问句 i'm shorter than he is改为一般疑问句