题目内容
9．Shirleywas helping（help）her mother when the bell rang．分析 当电话响了的时候，Shirley正在帮她的妈妈．
解答 答案：was helping 考查单词填空．根据题干是的rang可知时态是一般过去时，结合句意当电话响了的时候，Shirley正在帮她的妈妈．语句用过去进行时，构成是主语+was/were+doing，主语Shirley是单数，助动词用was，help的现在分词是helping，故答案是was helping
点评 解答此题的关键是根据语境推测要填内容表达的含义，然后能理解各选项内容，有时可能没有必要细细区分每个单词的含义，仅根据句子语气就可以判断出正确答案．
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