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 speak daggers

To abuse someone
None of these
To speak to a person with hostility
To indulge in voracious talks

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Idiom
White blood cell act

As a source of energy
For clotting blood
As a medium for oxygen transport from lung to tissues
As a defence against infection

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