A、Because they nag you all the time. B、Because they play a double game with you. C、Because they hurt you emotionally. D、Because

M: And how do I deal with them?
W: Most of the time you do have to confront the boundary-buster.(6- 1)But what we suggest is again to cool your system down, make sure you take the high road. You’d better say in a way that they actually say "Oh, okay, I hear you" , rather than yelling at him. What we tend to say is "You are so loud" instead of saying "you know what, it really bothers me, I can’t concentrate when your voice goes up, so can you please calm it down?"(6-2)So it’s a way, it’s a communication style and we give many examples in Working With You Is Killing Me.
M: Okay. And what’s the worst kind of co-worker?
W:(7)Well, what we call the worst kind, what we’ve decided among ourselves is the " wrecker" and this is because this person will speak very sweetly to you, and in the meantime, stab your back, one way or another, behind you.
M: Right, and what should I do about that?
W:(9 - 1)Well, you have to be your own, wage your own PR campaign, that is public relation campaign.(8)As soon as you detect that somebody is talking negatively about you, you need to just make sure that you’re at every meeting and find out what the person is saying about you. And wage your own PR campaign, get people to speak better of you, and ultimately they get caught.
M: Right.(9-2)The key with the wrecker is you have to detect it. When does it get to the point that either you have to quit or the annoying person has to quit?
W: That’s a really good question. And what we say in Working With You Is Killing Me is that,(10)you actually have to figure out your tolerance level and you also need to determine what your fatal attractions are. For some people as I have mentioned are tolerable, if they use our technique and learn to manage up, they can deal with it: for others that are just not acceptable and the toxins from working with someone like that literally wear away at their health.
M: All right, I see. Thank you. I appreciate it.
This is the end of Part Two of the interview. Questions 6 to 10 are based on what you have just heard.
6. Which of the following is NOT mentioned to pay attention to in terms of dealing with boundary busters?
7. Why is the worst kind of co-workers called the "wreckers"?
8. What is unnecessary for you to do when dealing with persons called "wreckers"?
9. What is the key with the wreckers?
10. What is the key to deciding on whether you should quit or not?