—I hear Jane has gone to the Holy Island for her holiday. —Oh how nice! Do you know when

问题补充：

—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：

A. was leaving

B. had left

C. has left

(答案→)D. left

解析：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。