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. To beat the air

To make frantic efforts
To act foolishly
To make every possible effort
To make efforts that are useless or vain

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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. To give chapter and verse for a thing

To produce the proof of something
To attach artificial value to a thing
To make publicity of a thing
To eulogize the qualities of a thing

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