【题目】The civil war broke out in Libya, ______ to the instability of the international oil price．
A. to contributeB. contributed
C. having contributedD. contributing
在线课程【答案】D
【解析】
考查非谓语动词。句意：利比亚爆发了内战，造成国际油价不稳定。contributing to the instability of the international oil price，现在分词在句中作结果状语。contribute to造成，选D。