10a Add words needed to complete compound structures.

In compound structures, words are often omitted for economy: Tom is a man who means what he says and [who] says what he means. Such omissions are acceptable as long as the omitted words are common to both parts of the compound structure.

If omitting a word from a sentence would make the sentence ungrammatical because the word is not common to both parts of the compound structure, the word must be left in.

The example reads, Mayor Davis never has (insert) accepted (end insert) and never will accept a bribe.

A text below reads, Has ellipsis accept is not grammatically correct.