问题描述：
1 The cat ran away as fast as it___(can).英语高手做做这几题
2 I have lost five pairs of sports shoes since I___(come)
3 The old woman has been___(live)alone for ten years.
2 I have lost five pairs of sports shoes since I___(come)
3 The old woman has been___(live)alone for ten years.
问题解答：
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