Final answer:
The best method to combine the given sentence and clause is option B: 'I really like yo-yoing, and I'm pretty good at it, too'.
Step-by-step explanation:
The most logical way of combining the sentence 'I really like yo-yoing' and the clause 'And I'm pretty good at it, too' is option B: 'I really like yo-yoing, and I'm pretty good at it, too'. This way, you maintain the meaning of both sentence parts, and the transition is smooth. Option A would be incorrect because it causes a break in the flow of the sentence. Option C disrupts the usual sentence structure, which can confuse readers.
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