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English Vocabulary and Phrasal Verbs
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Tests will be _________ _____ to determine the causes of the failure.
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A
carried out
💡 Explanation:
The correct answer is 'carried out' (option B). This formal phrasal verb means to conduct, perform, or execute a procedure, test, or investigation. 'Taken up' means to begin a new activity or address an issue, 'looked into' means to investigate, and 'run on' means to continue without stopping or to operate on a particular source.