The document appears to contain a set of prompts or exercises likely designed for language practice, including forming questions, exclamations, and reported speech. Here’s how you might complete each prompt:

1. **What is the depth of this lake?**
- **How** deep is this lake?

2. **How interesting the film is!**
- **What** an interesting film!

3. **The furniture was so expensive that we didn’t buy it.**
- The furniture was not **affordable**.

4. **I'm sorry that I didn't go to the party last Sunday.**
- I regretted **missing the party last Sunday**.

5. **He said, "You stole my record, Bill."**
- He said that **Bill had stolen his record**.

These are sample completions based on the structure of the original sentences.