西医处方书写规范样本:句型转换

来源：百度文库 编辑：杭州交通信息网 时间：2024/05/08 21:37:40
Bill could swim when he was only four.
Bill ___ ___ ___ swim at the age of four.

was able to

was able to

句型转换 句型转换. 句型转换 句型转换 句型转换 句型转换 句型转换！！！ 句型转换 句型转换: 句型转换