Rewrite the sentences in the passive.
1. If you break something, tell the host.
2. They appreciate a thank-you note after the diner.
3. Alice sent flowets to the Martins.
4. They require formal dress
5. The host offered the first toast.

1. If you break something, tell the host.
Tell the host If something is broken  by you
2. They appreciate a thank-you note after the diner.
A thank -you note  is appreciated  after the dinner by them
3. Alice sent flowets to the Martins.
Flowers were sent to the martins by alice
4. They require formal dress 
Formal dress is required by them
5. The host offered the first toast.
The first  toast  was offered  by the host