【题目】by her classmates for fatness, she decided to go on a diet so as to lose weight.
A.To be annoyed
B.To have been annoyed
C.Having been annoyed
D.Having annoyed

【答案】C
【解析】句意：因为肥胖被同学烦，她决定节食减肥。动词annoy与主语she构成被动关系，且表示已经完成的事情，所以使用现在分词的完成被动式having been done做状语，强调已经完成；而过去分词done更多强调 被动关系。故选C。