Idiom
Blood is red in colour due to the presence of ________

Cytochrome
Hemocyanin
Haemoglobin
Chlorophyll

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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. The boss brought matters to a head by forcing him too work more.

created a lot of unhappiness
made him unhappy
brought matters to a decisive point
created an atmosphere of confrontation

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