第15题: [单项选择]We (had lived) in this house for three years (while) my father decided (to have) us (move) to a new neighborhood. A. had lived B. while C. to have D. move 参考答案:B 答案解析:[解析] 应改为before。根据句子的前后逻辑判断,前面的事情发生在后面的事情之前。本句的意思是:“在我父亲决定搬家之前,我们已经在这里住了三年了。”