问题
选择题
Since Jack was laid off from his job three months ago, he a new one, but without luck.
A．1ooked for
B．had looked for
C．is looking for
D．has been loking for
答案
答案：D
题目分析：考查时态。since+含有过去时的句子，与完成时连用。根据句意可知，Jack被辞退后，一直在找新工作，但还没找到。找工作这个动作可能会继续下去，用完成时。故选D。