A) Tim is learning to repair jeep. B) It is difficult to find Tim lately. C) Tim is too busy to help them now. D) Tim finds it difficult to pass his exams.
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答案解析:
{MP3:http://wximg.233.com/NewsFiles/2011-9/20/03.mp3}A) In a
{MP3:http://wximg.233.com/NewsFiles/2011-9/20/03.mp3}A) In a corn field. B) At