问题补充:
—When Tom got to the examination room, he realized he his pen at home.
-Oh, he is too careless.
A. had left
B. had forgotten
C. was leaving
D. leaves
答案:
(答案→)A. had left
B. had forgotten
C. was leaving
D. leaves
解析:句意:当汤姆到达考场时,他才意识到他把钢笔忘在家里面了。——哦,他太粗心了。结合语境可知上文描述的是一直持续到过去某时的动作,故用过去完成时态。Forget只脑海中忘记了某事;leave指的是实际上的遗弃,丢下的意思。结合语境可知选A。