The idea is to change the expression "that kept" to "that keeps" to keep the sentence written in standard English.
Standard English refers to its most formal and grammatically correct form. Therefore, all verbs, pronouns, and nouns must be added to sentences in their correct forms, using all rules of grammar and syntax.
Furthermore, it is necessary to abandon the use of language vices and colloquialism that are common in informal English but incorrect in standard English.
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