Answer: Restate the main points, without giving out any main details.
Explanation:
While restating, you shouldn't restate your thesis, or theme. That would be simply repetitive. You also should not push your ideas forward, or, give evidence. The sentence itself should be considered a well-fit conclusion, as to not cut off your thoughts. These are every teacher's guidelines for concluding sentences of every writing type, excluding narratives.
In addition to the previously stated answer make sure that while your sentence ties all of your points together it does not come off as being a summary.
We have stepped up our war production on a scale that is testing our industrial power, our engineering genius and our economic structure to the utmost.
