1．考查冠词。developed a deep interest in…；at the age of…。
2．因为petrol，所以mustn't决不允许。
3．根据hard to leave和chose to go的逻辑关系，确定用Although引导让步状语从句。
4．考查时态。found可能会干扰选择正确答案；但will scold可提示tell的时态。
5．动词辨析（惯用法）。The sun rises in the east and sets in the west.
6．考查时态和语态。ducks和feed关系为被动。
