这套拼图缺少最后一块，影响了它的完整性。

The puzzle is missing the last piece, which affects its ___completeness.

这份指南因其完整性而受到推崇，它涵盖了所有必要的步骤。

This guide is highly regarded for its ___completeness, including all necessary steps.

这个逻辑系统的完备性确保了所有真命题都能被证明。

The ___completeness of this logical system ensures every true statement can be proven.