问题补充:
— are they doing? — They’re .
A. What, run B. What, running C. Who, running
答案:
解析:句意:他们正在做什么?他们正在跑步。what什么,who谁,run跑步,现在分词的形式是双写n加ing,故选B
时间:2021-10-13 12:47:48
— are they doing? — They’re .
A. What, run B. What, running C. Who, running
解析:句意:他们正在做什么?他们正在跑步。what什么,who谁,run跑步,现在分词的形式是双写n加ing,故选B