1.1.It is only ten minutes’ walk from your building to mine.（改为同义句）
I spend only ten minutes walking from your building to mine .
或
It takes only ten minutes to walk from your building to mine.
2.Maybe you can ask Jim to take you out
You ( may ask ) Jim to take you out.
3.Father drivers me to school hen it rains.（改为同义句）
Father (takes ) me to school ( by car ) when it rains.
4.When you come back,don’t forget to buy your friends some presents(改为同义句)
When you come back,( remember ) to (buy some presents ) your friends.
祝你假期愉快!加油!不明白再问!