I hardly ever see any from the four variations stated in the initial post. All 4 of these variations are correct. Just one could argue that they are extra acceptable than "Sincerely yours". Any of these can be a refreshing alter from examining One more American form letter. 以下のような流れで操作を行うことで「表示できません」というエラーが発生することがございます。１．学生が回答を開始... https://mortons111zws8.oneworldwiki.com/user