Sure! Here are the completed sentences:

1. The waiter brought me this dish.
→ I **was brought this dish by the waiter**.

2. Our friends send these postcards to us.
→ These postcards **are sent to us by our friends**.

3. I feel sick because I ate too much ice cream.
→ I wish **I hadn't eaten so much ice cream**.

4. I'm afraid our football team will lose the game.
→ I wish **our football team wouldn't lose the game**.

5. I'm sorry I don't live near my work.
→ If only **I lived near my work**.