问题标题：
---Iwenttovisityourparentsat8：00p．m．Yesterday，butnobodywasin．---Oh，___ofuswereenjoyingawonderfulconcertatthatmoment．（）A.allB.noneC.bothD.neither
问题描述：
---I went to visit your parents at 8：00p．m．Yesterday，but nobody was in．
---Oh，___ of us were enjoying a wonderful concert at that moment．（）
A.all
B.none
C.both
D.neither
单晨伟回答：
答案：A．考查不定代词．句意"--我昨天下午八点去拜访你的父母，单数没人在家．--哦．那时我们正在享受一场精彩的音乐会．"．all全部．none没人．both两者都．neither两者都不．根据butnobodywasin但是没...
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