试题题干
WORD FORMATION
Complete the following sentence with the proper form of the word in the bracket.
(rich) The professor emphasized that the goal of the course is to
our understanding of other cultures.
参考答案
试题解析
此处缺少动词。
不定式作表语。to后接动词原形。所以，变rich为动词enrich。
句意：教授强调这门课的目标是丰富我们对其他文化的理解。