What made Bill so angry?________.His girl friend promised to come at 8:30,but she hasn'tcome yet.AHaving kept waiting B.Being kept waiting be deeping wait D.Being kept waited选Ｂ．why?
热心网友
被动语态，因为Bill的女朋友没来，他才被迫等待的，故不能用主动语态被动语态构成是：be（相应时态）+过去分词keep的过去分词是kept，句型是keep doing sth然后动名词作主语故选B
热心网友
What made Bill so angry?__Being kept waiting _.His girl friend promised to come at 8:30,but she hasn'tcome yet.首先to keep sb。doing 固定用法主要的是Being kept waiting 在回答中作状语，然后可以看到空格后面是句号表明这个空格里面就是对上面一句的回答，后面是一些补充说明。因此断定空格部分的主语是问句中的Bill，把省略部分写出来就是：Being kept waiting, Bill got very angry. 因为主语是bill所以专与部分要用被动语态 being kept waiting, being现在分词表示伴随。