The word "that" can be replaced with various synonyms depending on the context. Some alternatives include "it," "this," "those," "these," "such," "the," or more specific terms like "the one," "the thing," or "the person." The choice of replacement word should be based on the intended meaning and clarity of the sentence.
instead of being that
effective.
customize
Programme
Apothecary
end
defeated
sequential, ordered
applied, exercised
The other word which is widely used instead of doorknob is latch.
One alternative word that can be used instead of "they" is "them."
plainly, flatly, boring.