1. （）by a group of children, the old man went on the story.
A surrounded
B Being surrounded
正确答案是A，我自己做知道，可是当学生问为什么不选B时我却说不出原因？选B是哪里不对呢？
2. when the teacher said someone cheated in the exame, he()you.
A. didn't refer to
B wasn't referring to
答案是B，我想知道为什么不选A？？
Thanks a lot to anyone who offers to help!!!!!!!!!!
1 A当主句和从句主语一致时，主句的主语和谓语动词省略。原句The old man was surrounded by a group of children.Being surrounded 是现在进行时，句意应该是因为被围着，老人继续讲故事，这其中蕴含着先后顺序，“围”和“讲”并不是同时进行的。2 B注意本题中...
