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。