He saw birds flying in sky.

Meaning: This sentence describes the boy seeing birds flying in the sky.

Choice of Words: Saw means to perceive something with your eyes. Birds are warm-blooded vertebrates characterized by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a lightweight skeleton. Flying means to move through the air using wings. In is a preposition that indicates the location of something. Sky is the upper part of the earth's atmosphere.

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