Correct any incorrect prepositions in 1–8

Correct any incorrect prepositions in 1–8.
in-on or write CORRECT if there is no incorrect preposition in the sentence
1. The TV series is based in the book of the same name.

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2. Penguins are slow on land but very good in swimming.

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3. When watching wildlife, it helps to dress in dark clothes.

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4. Your exam result will depend of how hard you study.

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5. We arrived to our hotel just before it started snowing.

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6. Climate change has had a big effect on the plants here.

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7. The local fishermen’s nets are all made with hand.

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8. TV wildlife programmes seem to be popular all over the world.