1 . They have found out a way. It can deal with the problem. (运用定语从句合成一个句子)
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2 . Biking is a favorite activity at my________ .(根据句意填空)
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20-21高一上·全国·课时练习
3 . The boy is old enough. He can take care of himself. (使用不定式将两个句子合成一句)
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