It should be the reason for inserting footnotes. You just need to insert a footnote on the first page. After insertion, there is a blank page on the last page. Because there is a page break at the end of the text (the next page), it cannot be deleted (deleting it directly will become a single column). Solution: Insert a page break (continuous) at the end of the previous page with a page break (next page), and then delete the last page break (next page). At this time, only the last page becomes a single column, and then the last page becomes a double column. I still need to adjust the margins to be consistent with the previous pages. Or 1. First, open a word document and enter the normal document interface. Bian Xiao uses version 20 10, which is basically the same as the previous version in 2007, but there are some differences in display. 2. Click the review command in the word document menu, switch to the review panel, find the revision group in the toolbar, and then click the show tag command. 3. Select a specific person in the drop-down menu, then select the designated approver in the menu on the right, and click the check box in front. 4. Now, only the comments of the selected reviewer are displayed in the document. Click Delete in the comments group under the review panel, and select Delete all displayed comments in the drop-down menu. word will delete all comments of the specified reviewer.