单选题 15. —Mary, I hope you've packed and are ready to leave.
—Yes, I've packed, but not quite ready. I can't find my passport.
—Your passport? That's the one thing you mustn't leave behind.
—I know. I haven't lost it. I've packed, but ______.
—Well, you have to find it at the airport. Come on! The taxi is waiting.

A、 there might be a traffic jam
B、 I've probably left it in a taxi
C、 I'm afraid you've taken it
D、 there's a lot of stuff to pack
E、 I can't remember which bag it's in

【正确答案】 E

【答案解析】 —玛丽，我希望你已经收拾好行李准备出发了。
—是的，我已经收拾好了，但还没有完全准备好。我找不到我的护照了。
—你的护照吗?这是你一定不能落下的一个东西。
—我知道。我没有弄丢。我已经收拾好了，但是我不记得它在哪个包里了。
—好吧，你只能在机场找它了。快点!出租车在等着了。
根据上下文，空白处体现的是护照的信息。由于护照是收拾好了，并不是丢了，因此，说话人不确定的是护照在什么地方。故选E。