试题题干
WORD FORMATION
Complete the following sentence with the proper form of the word in the bracket.
(mystery) No one knows where he comes from. There is something
about his family background.
参考答案
试题解析
后置形容词做定语，修饰something。把mystery变为mysterious。
句意：没人知道他从哪里来。他的家庭背景是个谜。