优质解答
1. I'm writing to （inform you of the good news that you are admitted to Peking University）.
2. I think it a great help if you can do me a favour and (provide me with whatever I need)
3. I'm looking forward to your early reply.
1. I'm writing to （inform you of the good news that you are admitted to Peking University）.
2. I think it a great help if you can do me a favour and (provide me with whatever I need)
3. I'm looking forward to your early reply.