If you have nothing to do--------------

1. If you have nothing to do-------------- 1. go to library.

2. If you have nothing to do-------------- 2. help others.

3. If you have nothing to do-------------- 3. be with your father.

4. If you have nothing to do-------------- 4. tell your father you are free.

5. If you have nothing to do-------------- 5. then read books.