问题补充:
单选题Asweallknow,itwas_____thatresultedintheterriblecaraccident.A.because of her carelessnessB.her being carelessC.because she was carelessD.she was so careless
答案:
B解析本题可采用减元法,把强调句型中的It was…that…去掉,就不难看出该句缺少主语。Herbeing careless是-ing形式复合结构,在句中充当主语。故选B。