Question

You will be successful in the interview ________ you have confidence.

1. A.
   before
2. B.
   once
3. C.
   until
4. D.
   though

Answer 1

B
once为连词，其后引导一个从句，意为“一旦”；A项before“在……之前，没来得及……就”；C项until“直到……才”；D项though“虽然，尽管”。故选B项。
点评：该题考查连词，难度适中。考生首先应弄清各个连词的含义，再据上下文的语境和句意作出正确的选择。