Idiom
For each of the following sentences four alternatives are given. You are required to choose the correct meaning of the idiom or phrase given or underlined in the sentence. The detective left no stone unturned to trace the culprit.

used all available means
did very irrelevant things
took no pains
resorted to illegitimate practices

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Idiom
To smell a rat

To be in a bad mood
To get bad small of a bad dead rat
To suspect foul dealings
To see signs of plague epidemic
None of these

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