1. First, edit the directory page again. The word "directory" is really missing from the directory page, so you need to edit the directory page again. When editing, you can refer to the table of contents page in the paper format template and edit it in the same format to ensure that the page contains the word "table of contents".

Secondly, ask your tutor or editor for help. If you are not sure how to edit the table of contents page, or you can't solve the problem after trying many times, you can ask your tutor or editor for help. Tutors usually have more experience and skills, which can help solve this problem.

3. Finally, for the loss of two words in the table of contents in the paper, it is necessary to find out the reasons in time and make amendments to ensure the format specification and integrity of the whole paper.