来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/25 20:14:03
根据所给的单词，和所画线句子 完成句子
解题思路： 理解句子结构，分析单词所处位置在句子中的成分，判断其所用的适当形式。
解题过程：
解答：
1. where ha had been
2. did I realise
3. why I changed my mind
4. had sung
5. will you achieve
6. shouldn't have allowed
7. when they worked together
8. has been warning
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