The Smiths consider a puter, which is monly considered a great help in their work and study.
A. to buy; to be
B. buying; to be
C. to buy; being
D. buying; being
网友回答
A. to buy; to be
(答案→)B. buying; to be
C. to buy; being
D. buying; being
解析：考查短语：考虑做某事consider doing sth，被认为，be considered to be，句意：史密斯一家考虑买一台电脑，普遍被认为在他们的工作和学习中非常有帮助。所以选B。