1.l than sister am shorter my 连词成句 2.me amy older is than 连词

1.l than sister am shorter my 连词成句 2.me amy older is than 连词成句
3.the girl jumps high.the boy jumps higher.合并成一句
4.ls your father older than your mother:根据实际回答问题

1. I am shorter than my sister.
2. Amy is older than I.
3. The boy jumps higher than the girl.
4. No, he isn't.