问题
选择题
—I hear Jane has gone to the Holy Island for her holiday.
—Oh, how nice! Do you know when she ________?
A．was leaving
B．had left
C．has left
D．left
答案
答案：D
因为Jane已经度假去了，“离开”此地就当然是在此之前的过去某个时间了，所以用一般过去时，选D。另外，when通常都不与完成时连用，排除B和C，A也与语境不符。