1、Mary is shorter than Lily 2、John is heavier 3、This one is

分别是原题、特殊疑问句和一般疑问句.
1、Mary is shorter than Lily.
Who's shorter than Lily?
Is Mary shorter than Lily?
2、John is heavier.
Who's heavier?
Is John heavier?
3、This one is smaller.
Which one is smaller?
Is this one smaller?
再问： My arms are longer than your arms 写出问句
再答： Whose arms are longer than yours? Are my arms longer than yours?