),mary found her teacher standing behind her.选项见内

题目

),mary found her teacher standing behind her.选项见内
A.surprised B.Being surprised 括号里应填哪一个,
有人知道为什么吗

答案

b 本题考点:非谓语动词,后半句是完整句子,所以前面不可能有谓语动词,只能是非谓语动词