Question

We are bound to solve the present severe problem, ______ we act intelligently and promptly.

1. A.
   even though
2. B.
   unless
3. C.
   as long as
4. D.
   in case

Answer 1

C
考查条件状语从句。as long as = on condition that意为“只要”。句意为：只要我们马上明智地采取行动，我们一定能够解决当前的这个紧迫的问题。