A: Don’t play with the dog. It always excites him .
B: I think he’s _____ because he’s having fun.
a. exciting
excited

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Which sentence is written correctly?
A. The anaconda the biggest snake in the world can weigh up to 250 kilograms.
B. The anaconda, the biggest snake in the world can weigh up to 250 kilograms.
C. The anaconda the biggest snake in the world, can weigh up to 250 kilograms.
D. The anaconda, the biggest snake in the world, can weigh up to 250 kilograms.