II. Rewrite sentences, using the provided word keep meaning as that of the root one.

1. Thousands of people have to build that castle for him for years.

- That castle ..........................................................................................................................

2. She has never read this book before.

- It is .....................................................................................................................................

3. He failed in the examination last year.

- He did not ..........................................................................................................................

4. I haven’t eaten this kind of food before.

- This is the first ................................................................................