问题补充：
--- --- Drop in if you have time.
A. Well, I really have to leave now.
B. I wonder if you could let me go now.
C. I’d like to go now.
D. Do you mind if I leave now?
答案：
(答案→)A. Well, I really have to leave now.
B. I wonder if you could let me go now.
C. I’d like to go now.
D. Do you mind if I leave now?
解析：句意：——好吧，我现在真的必须离开了。——如果你有时间，顺便来玩。A. Well, I really have to leave now.好吧，我现在真的必须离开了。B. I wonder if you could let me go now. 我想知道现在你是否能让我走。C. I’d like to go now.现在我想走。 D. Do you mind if I leave now?如果我现在离开你介意吗？根据第二个人的话Drop in if you have time.，可知第一个人坚决要走，因此用情态动词have to，表示意志坚决，必须得走。故选A。
