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Choose the letter A, B, C, or D to show the underlined part that needs correcting. We will protect the environment if we didn't throw trash into the water.

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Choose the letter A, B, C, or D to show the underlined part that needs correcting.

We will protect the environment if we didn't throw trash into the water.

protect

we

didn't throw

into

Giải thích

C. didn't throw