问题
选择题
The mother with her son ________ at home ________ that snowy night.
A．were; at
B．was; at
C．were; on
D．was; on
答案
答案：D
第一空考查主谓一致，主语是：The mother with her son，with连接两个主语，谓语和前面的主语一致，所以填was，第二空考查介词的用法，在具体的早晨、下午、晚上都用on。所以填D。