--- Haven’t seen you for ages! Do you still work in Guangzhou?

---        . It’s two years since I worked there.

A．Yes, I have

B．Yes, I do

C．No, I haven’t

D．No, I don’t

根据建质【2009】87号文要求，安全专项施工方案的施工安全保证措施应该包括哪些内容？