135. ____ the books not properly marked and catalogued, they ____ be so easy to find. A: A. If; could B: B. Were; couldn’t C: C. Had; couldn’t D: D. Were; could

The mounting pile of failure creates a negative feedback loop that threatens Facebook's future in other ways. Indeed, the more Facebook's disappointment in the market is catalogued, the worse Facebook's image becomes. (CET6-2018.6)