英文-關係代名詞老師教的我聽不懂 - 寵物

1.A yound man moved here yesterday.
Do you know the young man?
→Do you know_________________________?
2.Mary is wearing a red dress.
She bought the dress in the night market last night.
→Mary is wearing _________________________.
3.Jerry goes out with a Japanese girl.
He met this girl three days ago.
→Jerry goes out _________________________.
4.Cindy is feeding a dog.
The dog is a birthday gift from her father.
→The dog _____________________is a birthday gift_____.
5.A boy hit my brother this morning.
The boy's name is Bobby.
→A boy ____________________ hit my brother ______.
請給我答案以及更詳細的解說(附中文)~~小弟將感激不盡
Update:
EX1.A woman moved here last week.
The woman has a lovely dog.
→The woman who moved here last week has a lovely dog.
2.I just put a newspaper on the desk.
Do you see the newspaper?
→Do you see the newspaper which I just put on the desk.