Idiom
Which statement regarding the mammalian heart is correct?

In the adult heart, blood in the right chambers of the heart cannot enter the left chambers without passing through the lungs
When the right atrium contracts, it forces blood into the left atrium
Oxygen-loaded blood moves only through the right side of the heart
Blood is pumped from the heart via the atria

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Idiom
To get into a scrape

To find oneself in an awkward predicament
To get into irritating circumstances
To be trapped in a conspiracy
To get into a muddle

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