The traffic is so heavy. It will take us at least...

Câu hỏi: The traffic is so heavy. It will take us at least an hour to get there. 

A Unless the traffic is heavy, it will take us at least an hour to get there.

B As the traffic is so heavy, it will take us at least an hour to get there.

C The traffic was so heavy that it took us an hour to get there.

D We will spend more than an hour to get there to avoid heavy traffic.