试题题干
Word Formation
Complete the following sentence with the proper form of the word in the bracket.
(grace) He gave a 
bow to the audience.
参考答案
试题解析
此处缺少形容词。
a是冠词，bow是名词，名词需要形容词修饰。所以变grace为形容词graceful。graceful 优雅的，优美的。-ful 形容词后缀。
句意：他优雅地向观众鞠了一躬。