The U.S. official said North Korea --- and Iran --- should follow in the steps of Libya, which last December said it would work______ to allow international weapons inspectors to do their work.
A.unconditionallyB.unwillinglyC.unfortunatelyD.uncomfortably在线课程A
解析：
本题考查副词。A. unconditionally无条件地；
B. unwillingly不情愿地；
C. unfortunately不行地；
D. uncomfortably不舒服地。根据句意这里应当是无条件接受武器调查人员的检查，选A