没有一个学生参加了那个可选研讨会。

___Not ___one student attended the optional seminar.

争吵过后，她好几天都没跟我说一个字。

After the argument, she said ___not ___a word to me for days.

在这个现代街区，你找不到一栋传统建筑。

In this modern district, you will find ___not ___one traditional building.