while从句 后面接可延续性动词,且用完成时形式
而后面的主句要用过去式,表示一个动作正在发生时,另一个动作就开始发生了
祝你更上一层楼,有不懂的可以再问哦答案是A啊,你那个答案是错的,piano等这类的乐器这种名词,要在前面加定冠词the,而表示运动和打球的话,就不用加冠词
While we ___ for the bus, a girl __up to us. A waited; ran B were waiting; was running
While we ___ for the bus, a girl __up to us. A waited; ran B were waiting; was running
C were waiting; ranDwaited; was running
应该选哪个?为什么?感谢回复!
C were waiting; ranDwaited; was running
应该选哪个?为什么?感谢回复!
英语人气：886 ℃时间：2019-08-22 09:40:35
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