For our both benefit，we are grateful to you for thinking about our sug-考呗网

单选题For our both benefit，we are grateful to you for thinking about our suggestion．

B[分析]代词应用
不定代词both(of)表：两者，双方；一般用于名词或人称代词前，如：both ofUS；在人称代词前，只能用both of，且要与人称代词的宾格连用；如果名词前没有冠词、物主形容词或指示代词，不能用both of，因此只有B是正确答案。

1“You realize that you were driving at lOOmph，don’t you?”“N0，officer，I may not have been．This Car can’t do more than 80．”

2A good modern newspaper is an extraordinary piece of article．

3Because it is not a serious problem, we are not necessary to take strict measures against the student．