"For the next three months,it's going to take an hour and a half just to get downtown."
- 在接下來的三個月裡，光是要進市中心就得花上一個半小時。

"On the plus side,though,we'll be able to get there much faster after it's all done."
- 不過往好處想，完工以後我們要去那裡就更快了。

"What is going to happen in three months?"
- 三個月後會發生什麼事?

所以答案是(C)沒錯
三個月完工後，要去市中心會更加輕鬆(快速)