问题补充:
They considered a computer, which was considered a great help in their work.
A. to buy;to be
B. buying;being
C. to buy;being
D. buying;to be
答案:
A. to buy;to be
B. buying;being
C. to buy;being
(答案→)D. buying;to be
解析:句意:他们考虑买一台计算机,被认为是在其工作中有很大的帮助。consider vt1.考虑,+v-ing 2. 把(某人、某事)看作…,认为(某人、某事)如何〔后接 as ..., of ..., (to be) ... 等〕,根据题意可知D正确。
考点: 考查非谓语动词的用法辨析。